EP0018075B1 - Dispositif pour l'épreuve de charge - Google Patents

Dispositif pour l'épreuve de charge Download PDF

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Publication number
EP0018075B1
EP0018075B1 EP19800300725 EP80300725A EP0018075B1 EP 0018075 B1 EP0018075 B1 EP 0018075B1 EP 19800300725 EP19800300725 EP 19800300725 EP 80300725 A EP80300725 A EP 80300725A EP 0018075 B1 EP0018075 B1 EP 0018075B1
Authority
EP
European Patent Office
Prior art keywords
bag
testing apparatus
weight testing
weight
extends
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
EP19800300725
Other languages
German (de)
English (en)
Other versions
EP0018075A1 (fr
Inventor
Graham Abraham Arthur
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.)
WATER WEIGHTS LIMITED
Original Assignee
WATER WEIGHTS (INTERNATIONAL) Ltd
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 WATER WEIGHTS (INTERNATIONAL) Ltd filed Critical WATER WEIGHTS (INTERNATIONAL) Ltd
Publication of EP0018075A1 publication Critical patent/EP0018075A1/fr
Application granted granted Critical
Publication of EP0018075B1 publication Critical patent/EP0018075B1/fr
Expired 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
    • B66C23/88—Safety gear
    • B66C23/90—Devices for indicating or limiting lifting moment

Definitions

  • the present invention relates to weight testing apparatus and particularly to apparatus for testing the lifting strength of hoists, winches, cranes and similar lifting devices.
  • weight testing equipment has comprised heavy and bulky weights of metal or concrete having means for attachment to a carrying structure which incorporates a dynamometer or other load measuring meter which indicates the total load borne by the hoist or crane and the inertial stress due to acceleration of the rate of lifting.
  • Such testing equipment has frequently to be transported to a site or work centre for use. This can involve the transportation of weights which may be of the order or 40 tonnes or more and the storage of these weights when they are not in use. Both the transportation and storage of weights of this order creates many problems and costs.
  • U.K. Specification No. 783, 407 is concerned with collapsible containers and envisages the use of an outlet tube housed within the container and Swiss Specification No. 362 980 is concerned with a flexible bag for holding granular material.
  • U.K. Patent No. 1 501 763 discloses a disposable container for the transportation and storage of flowable materials comprising a bag of flexible sheet material and straps attached at spaced locations on the exterior of the sheet material for supporting the bag. None of these specifications however is addressed to the problem of suspending a flexible weight testing bag from a support.
  • weight testing apparatus comprising a liquid impervious bag, a liquid outlet at the bottom end of the bag, operable to retain liquid in the bag, an inlet at the top end of the bag and means for suspending the bag from a support by elongate load bearing elements which are flexible and generally uniformly spaced around the bag so that the bag is uniformly supported against burst forces exerted on it by the weight of a liquid contained therein characterised in that the liquid outlet comprises an outlet tube which extends from the bottom end of the bag wholly externally of the bag and is of a length such that its end can be positioned and retained above the top end of the bag.
  • the bag is preferably pear-shaped and open topped. If the bag is open topped it can be filled easily through the open top and emptied through the flexible outlet tube.
  • the flexible outlet tube is effectively closed by attaching it to the side of the bag with the top of the tube located adjacent the top of the bag during the filling operation and when the bag .is in use.
  • the bag can be adapted to support a second bag suspended below the first by providing a load supporting cable which extends through the bag from top to bottom, whereby a load can be supported on the cable beneath the bag without adding any further load to the bag or the elements thereof.
  • the cable extends through a sleeve which is joined in a fluid sealed relationship to the bottom of the bag and which extends upwardly to a point adjacent the upper end of the bag.
  • the apparatus can be transported to the site in an empty flat, folded or rolled up condition, suspended from the winch or crane to be tested and then filled with water to a predetermined level necessary for the application of the specified testing load.
  • the apparatus can be emptied by lowering the flexible outlet tube, the empty bag removed from the winch, packed and transported to the next site of use.
  • a plurality of the flexible fluid impervious bag of the present invention may be suspended from a support frame comprising a node and a plurality of arms extending outwardly from the node, the arms being equiangularly spaced around the node and each arm having means adjacent its outer end for attaching on bag thereto.
  • the outer ends of the adjacent arms of the support frame may be joined by links adapted to spread a transverse load applied to any one arm equally throughout the structure and the support frame may be suspended from a single load carrying boss by a plurality of cables each of which extends from the boss and through a sleeve at or adjacent an outer end of an arm.
  • an inlet manifold may be provided on the support frame for filing the bags.
  • a weight testing bag of the present invention is indicated generally at 10.
  • the weight testing bag 10 comprises a flexible envelope 11 which is generally pear shaped and which is made from a fluid impervious material such as reinforced polyvinyl chloride or neoprene.
  • the envelope 11 is open topped at 12 and has an outlet 13 at the bottom leading to a flexible outlet tube 14.
  • the flexible outlet tube 14 is of a length such that it can be raised and attached to the side of the envelope by a strap 15 so that its upper end 16 is located above the upper end of the envelope 11.
  • the envelope 11 is supported by a plurality of strengthening straps 17 made of webbing or any other similar material.
  • the straps 17 extend from the bottom of the envelope upwardly through sleeves 18 which are attached to the outer surface of the envelope.
  • Each strap terminates in an eye 19 which is attached to a shackle 20 which is itself mounted on a support boss 21 having an upwardly extending hook 22 which enables the bag to be easily suspended from a piece of apparatus to be weight tested.
  • the hook 22 may alternatively be replaced by a conventional shackle arrangement if this is preferred.
  • a load carrying cable 23 extends through the envelope 11 from top to bottom.
  • the upper end of the cable 23 terminates in a hook 24 which can be easily attached to a hook or eye 25 which is integral with the boss 21 and the lower end of the cable 23 terminates in an eye 26 which enables a second bag to be suspended below the first bag.
  • the cable 23 extends through a sleeve 27, the bottom end of which is joined in a fluid sealed relationship to the bottom of the envelope 11 so as to form an outlet 28 at the bottom of the envelope for the cable 23.
  • the upper end of the sleeve 27 extends approximately to the upper end of the envelope 11 so that the cable is sealed from the contents of the bag at all times.
  • the bag in its unfilled condition can be attached to a winch or other piece of apparatus to be weight tested by means of the hook 22.
  • the outlet tube 14 is then attached in its upright position by means of the strap 15 and the bag can be filled with water or any other liquid through the open top of the envelope 11.
  • the capacity of the bag 10 will be known and it can be filled to an extent sufficient to provide the required weight test.
  • the bag can be quickly and easily emptied by releasing the outlet tube 14 and allowing it to fall away from the upper end of the bag.
  • the bag is then emptied under gravity through the outlet tube 14. When the bag has been emptied it can then be removed from the apparatus being tested, folded and transported to its next site of use.
  • two or more of the bags 10 may be suspended from a single hook or eye 29 and a second tier of bags suspended below the first tier from the eyes 26.
  • the number of bags which can be suspended from a single hook or eye is limited because of the bulk of the bags when they are filled with water and we therefore provide a frame for supporting and spacing a plurality of bags below the same load carrying point.
  • This supporting and spacing frame is indicated generally at 30 in Figures 5 to 7.
  • the frame 30 comprises a central node 31 carrying six similar arms 32 which extend radially outwardly from the node 31.
  • the arms 32 are slotted into sockets provided in the node 31 and are equiangularly positioned around the node.
  • the outer ends of the arms 32 are joined by links 34 which are adapted to spread a load applied to any one arm equally throughout the frame.
  • the frame 30 is suspended from a single load carrying boss 35 by a plurality of load carrying cables 36 each one of which extends from the boss 35 to an outer end of an arm 32, where it passes through a sleeve 37.
  • the end of each cable 36 carries an eye 38 from which a bag 10 can be suspended by its hook 22.
  • an empty bag 10 is suspended on a cable 36 beneath each of the six arms 32 and the boss 35 is then suspended from the piece of apparatus to be weight tested by means of a U-shaped hook 39 which extends upwardly from the boss 35.
  • a U-shaped hook 39 which extends upwardly from the boss 35.
  • the frame 30 may therefore be provided with three inlet manifolds which are not shown but which may be mounted on the arms 32 and adapted to fill two diametrically opposite bags simultaneously. This ensures that a substantial weight imbalance cannot occur as the bags are filled.
  • a second tier of bags 10a can be suspended below the first tier of bags as shown in Figure 7.
  • the manifolds on the support frame are also preferably designed to minimise turbulence in the filling of the bags.
  • the metal components may be made as far as possible from duralumin so as to provide a rust-resistant extremely lightweight construction in relation to the weight or mass provided when the bag or bags are filled to the required extent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Examining Or Testing Airtightness (AREA)

Claims (12)

1. Appareil d'essai de charge, comprenant un sac (10, 10a) étanche aux liquides, une sortie de liquide (13) prévue à l'extrémité inférieure du sac (10, 1 Oa) et apte à être placée dans un état permettant de retenir un liquide dans le sac (10, 10a), une ouverture d'admission prévue à l'extrémité supérieure (12) du sac (10, 10a) et des moyens pour suspendre le sac à un support (21) à l'aide d'éléments de support de charge allongées (17) qui sont flexibles et sont répartis sensiblement à intervalles égaux autour du sac (10, 10a) pour que le sac (10, 10a) soit uniformément supporté à l'encontre de forces d'éclatement excercées sur lui par le poids d'un liquide qu'il contient, caractérisé en ce que la sortie de liquide (13) comprend un tube d'évacuation (14) qui s'étend complètement à l'extérieur du sac, depuis l'extrémité inférieure du sac (10, 10a), et qui est d'une longueur telle que son extrémité (16) puisse être positionnée et retenue au-dessus de l'extrémité supérieure du sac (10, 10a).
2. Appareil d'essai de charge tel que défini dans la revendication 1, caractérisé en ce que les éléments (17) sont fixés à un bossage porte- charge (21).
3. Appareil d'essai de charge tel que défini dans l'une quelconque des revendications précédentes, caractérisé en ce que le sac (10, 10a) comprend une enveloppe (11) étanche aux liquides, qui présente la forme générale d'une poire et est ouverte à son sommet.
4. Appareil d'essai de charge tel que défini dans l'une quelconque des revendications précédentes, caractérisé en ce qu'un cable de support de charge (23) s'étend du haut en bas à travers le sac (10, 10a), ce qui fait qu'une charge peut être supportée par le câble (23), en-dessous du sac (10, 10a), sans introduire d'efforts supplémentaires sur le sac (10, 10a) ou sur les éléments de supports de charge (17).
5. Appareil d'essai de charge tel que défini dans la revendication 4, caractérisé en ce que le câble (23) s'étend à travers un manchon (27) qui est réuni, par une liaison étanche aux fluides, au fond du sac (10, 10a) et qui s'étend vers le haut jusqu'à un point voisin de l'extrémité supérieure du sac (10, 10a).
6. Appareil d'essai de charge tel que défini dans J'une quelconque des revendications précédentes, comprenant plusieurs sacs (10, 10a) suspendus au-dessous d'un cadre de support (30) qui comprend un noeud (31) et plusieurs bras (32) s'étendant vers l'extérieur depuis le noeud (31) caractérisé en ce que les bras (32) sont répartis à intervalles angulaires égaux autour du noeud (31) et un sac (10, 10a) est suspendu à chaque bras (32) au niveau ou à proximité de l'extrémité extérieure du bras (32).
7. Appareil d'essai de charge tel que défini dans la revendication 6, caractérisé en ce que le cadre de support (30) comprend un nombre pair de bras (32).
8. Appareil d'essai de charge tel que défini dans la revendication 6 ou la revendication 7, caractérisé en ce que les extrémités extérieures des bras voisins (32) sont réunies par des organes de liaison (34) conçus pour répartir uniformément sur toute la structure une charge transversale appliquée sur l'un quelconque des bras (32).
9. Appareil d'essai de charge tel que défini dans l'une quelconque des revendications 6 à 8, caractérisé en ce que le cadre de support (30) est suspendu à un seul et même bossage porte- charge (35), par l'intermédiaire de plusieurs câbles (36) dont chacun s'étend depuis le bossage (35) jusqu'à une extrémité extérieure d'un bras respectif (32).
10. Appareil d'essai de charge tel que défini dans la revendication 9, caractérisé en ce que chaque câble (36) s'étend jusqu'au-dessous d'un bras (32) et est pourvu de moyens pour y suspendre un sac (10, 10a).
11. Appareil d'essai de charge tel que défini dans l'une quelconque des revendications 6 à 10, caractérisé en ce qu'une tubulure d'admission de fluide est prévue sur le cadre de support (30) pour le remplissage des sacs (10, 10a) avec un fluide.
12. Appareil d'essai de charge tel que défini dans la revendication 11, caractérisé en ce que la tubulure d'admission de fluide est conçue pour remplir simultanément des sacs (10, 10a) placés en des points diamétralement opposées.
EP19800300725 1979-03-07 1980-03-07 Dispositif pour l'épreuve de charge Expired EP0018075B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7908069 1979-03-07
GB7908069 1979-03-07

Publications (2)

Publication Number Publication Date
EP0018075A1 EP0018075A1 (fr) 1980-10-29
EP0018075B1 true EP0018075B1 (fr) 1985-10-30

Family

ID=10503699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800300725 Expired EP0018075B1 (fr) 1979-03-07 1980-03-07 Dispositif pour l'épreuve de charge

Country Status (3)

Country Link
EP (1) EP0018075B1 (fr)
DE (1) DE3071206D1 (fr)
GB (1) GB2047414B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133896B (en) * 1983-01-19 1986-06-25 Structure Flex Limited Load testing by water bags
US4640328A (en) * 1984-05-16 1987-02-03 Arney D B Collapsible liquid container particularly for transportation by helicopter
GB2163859B (en) * 1984-07-17 1988-02-10 Water Weights Ltd Weight testing apparatus
GB2161946B (en) * 1984-07-17 1988-04-07 Water Weights Ltd Supporting load-testing bags
GB2288668B (en) * 1994-03-11 1997-03-26 Water Weights Ltd Weight testing apparatus
WO1997011022A1 (fr) * 1995-09-21 1997-03-27 Water Weights Limited Appareil d'epreuve de poids
FR2768225B1 (fr) * 1997-09-10 1999-11-19 Pb Ems Sac souple impermeable, pour essai de charge en suspension
AU1517399A (en) * 1997-11-25 1999-06-15 Choon Loong Chong Load creation apparatus and method
US6494103B1 (en) 1997-11-25 2002-12-17 Chong Choon Loong Load creation apparatus and method
NO329390B1 (no) * 2009-07-28 2010-10-11 Mongstad Test Eiendom As Beholder til bruk som vannvekt og eventuelt for lagring og transport av vaesker, og anvendelser derav
WO2014177920A1 (fr) * 2013-05-03 2014-11-06 Atrac Inc. Système et procédé de sacs de charges d'épreuve
DE102013219072A1 (de) * 2013-09-23 2015-03-26 Wacker Chemie Ag Verwendung von flexiblen Behältern zur Lagerung von Flüssigkeiten
CN103754468A (zh) * 2014-01-09 2014-04-30 无锡沃特力材料科技有限公司 起重机用试重水袋
CN106226101A (zh) * 2016-07-30 2016-12-14 青岛蓝天创先科技服务有限公司 一种可折叠的桥式起重机静荷载试验配重水袋及吊架
CN108398178A (zh) * 2018-01-17 2018-08-14 山东钢铁集团日照有限公司 一种大量程行车秤快捷校验方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10466C (de) * Aktien-Gesellschaft für Eisenindustrie und Brückenbau, vorm. J. C. harkort in Duisburg Träger-Probirmaschine
DE759995C (de) * 1940-10-31 1953-01-05 Gottlob Dr-Ing Barner Verfahren und Vorrichtung zum Erkennbarmachen der Spannungs-verteilung an Konstruktions- und Maschinenteilen
DE976872C (de) * 1953-12-08 1964-07-02 Hans Liebherr Kippsicherung fuer leichte Turmdrehkrane
GB783407A (en) * 1956-05-31 1957-09-25 Us Rubber Co Improvements in collapsible container
FR1240656A (fr) * 1959-07-30 1960-09-09 Ets Poliet & Chausson Réservoir souple pour produits pulvérulents et granuleux
FR1484956A (fr) * 1966-06-27 1967-06-16 Dispositif destiné aux essais de charge, notamment pour le contrôle de la résistance de constructions, de véhicules automobiles, bascules ou autres
DE1756844C3 (de) * 1968-05-27 1974-01-31 Veb Schwermaschinenbau S.M. Kirow Leipzig, X 7031 Leipzig Vorrichtung zum Einstellen und Überprüfen von Lastmomentsicherungen an ortsveränderlichen Drehkranen
DE1911962B2 (de) * 1969-03-10 1971-07-08 Vorrichtung zum ueberpruefen von ueberlastsicherungen an hebezeugen
DE2140779C3 (de) * 1971-08-13 1974-06-12 Ludwig Dr.-Ing. 7500 Karlsruhe Pietzsch Vorrichtung zum Bestimmen der Grenzbelastungen von Auslegerkranen
FR2296171A1 (fr) * 1974-12-27 1976-07-23 Delattre Levivier Elements modulaires pour constitution de charges d'epreuve, et charges realisees au moyen de ces elements
DE2804404A1 (de) * 1978-02-02 1979-08-09 Erwin Fischer Ballastsack mit definiertem gewicht

Also Published As

Publication number Publication date
GB2047414B (en) 1983-02-09
EP0018075A1 (fr) 1980-10-29
GB2047414A (en) 1980-11-26
DE3071206D1 (en) 1985-12-05

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