EP0134524B1 - Supports de structures et structures comportant ces supports - Google Patents

Supports de structures et structures comportant ces supports Download PDF

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Publication number
EP0134524B1
EP0134524B1 EP84108718A EP84108718A EP0134524B1 EP 0134524 B1 EP0134524 B1 EP 0134524B1 EP 84108718 A EP84108718 A EP 84108718A EP 84108718 A EP84108718 A EP 84108718A EP 0134524 B1 EP0134524 B1 EP 0134524B1
Authority
EP
European Patent Office
Prior art keywords
cam
support
openings
parts
cams
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
EP84108718A
Other languages
German (de)
English (en)
Other versions
EP0134524A3 (en
EP0134524A2 (fr
Inventor
Stephen Walter Newton
Stephen Charles Botham
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.)
Portakabin Ltd
Original Assignee
Portakabin 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 Portakabin Ltd filed Critical Portakabin Ltd
Publication of EP0134524A2 publication Critical patent/EP0134524A2/fr
Publication of EP0134524A3 publication Critical patent/EP0134524A3/en
Application granted granted Critical
Publication of EP0134524B1 publication Critical patent/EP0134524B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F1/00—Devices, e.g. jacks, for lifting loads in predetermined steps
    • B66F1/02—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts
    • B66F1/04—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed
    • B66F1/06—Devices, e.g. jacks, for lifting loads in predetermined steps with locking elements, e.g. washers, co-operating with posts the posts being toothed and the devices being actuated mechanically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F15/00—Crowbars or levers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/061—Shores or struts; Chocks telescopic with parts held together by positive means by pins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G2025/045—Shores or struts; Chocks telescopic which telescoping action effected by a lever

Definitions

  • This invention relates to a support for supporting a structure on the ground or other support surface, hereinafter for convenience referred to as "the ground”.
  • the structure supported may, for example, comprise either a building or building unit of the type which is prefabricated and delivered to a prepared site, either in fully erected form or in the form of a knock-down pack.
  • a building structure Such a structure will hereinafter be referred to as "a building structure”.
  • the cam is usually rotated manually by a lever and the set distances are usually about 50mm.
  • the inner telescoping part of the support is therefore usually provided along its length with a series of openings at 50mm spacings.
  • a supprot having an inner part telescoped within an outer part with one of said inner and outer parts having means to secure the part to a structure to be supported, the other of said inner and outer parts having a foot for engagement with the ground, the inner or outer part having along its length a series of openings, each opening being capable of receiving an axle of a cam means, the cam means further including an eccentric cam which acts on the outer or inner support part respectively, and lever means to rotate the cam and hence cause telescopic extension of the parts, locking means being provided to preventtelescop- ic retraction of the parts when the inner and outer parts are in selected relative positions, the inner or outer part on which the cam bears having first and second abutments at positions displaced longitudinally of the support, and the cam being engageable with the first and second abutments selectively.
  • the outer part can be relatively telescoped a first set distance by engaging the cam with the first abutment, and a second set distance thereafter by engaging the cam with the second abutment.
  • the series of openings in the inner member are prefereably regularly spaced, in which case the first and second set distances may add up to a total set distance equivalent to the spacing between the openings in the inner part.
  • the mechanical advantage achieved by the cam can be increased so that the first and second set distances of relative movement between the inner and outer telescoped parts are small over the entire travel of the cam whilst the total distance may be sufficiently large that an excessive number of openings in the inner or outer telescoped part are not required.
  • the first and second abutments may be transversely displaced, the cam being transversely moved, for example along its axis of rotation, to enable the cam to engage either the first or the second abutments.
  • the locking means may need to be employed to provide support whilst the transverse movement of the cam is carried out.
  • the part on which the cam bears may be provided with an aperture which can be aligned with each of the openings of the series of openings of the other part, and the locking means, which may be a pin or the like, may, in use, be received in the aperture and an aligned one of the series of openings, to relatively lock the inner and outer parts against telescopic retraction.
  • first and second set distances are each less than the spacing between the openings of the series of openings in a preferred embodiment two apertures are provided in the part on which the cam bears, each aperture extending longitudinally of the support, a distance substantially equal to the first or the second set distance, whichever is the greater, although usually the first and second set distances and hence the extent of each of the apertures would be substantially equal.
  • the pin may be moved from one aperture to the other whilst the part on which the cam bears is supported relative to the other part by the cam means, and the longitudinal and transverse positions of the cam can be moved whilst the parts are supported against retraction by the locking means received in either one of the apertures, whichever is suitably aligned with an opening of the series of openings.
  • the first abutment may be provided on the outer part and may comprise a bearing surface at the end of the outer part in which the inner part is received and the second abutment may comprise a bearing block secured at the end of the outer part. If desired, stop means may be provided between the first and second abutments to prevent inadvertent transverse movement of the cam.
  • the cam means includes a second eccentric cam, the first mentioned cam and the second cam being located on opposite sides of the support, the part having the first and second abutments having further abutments with which the second cam can be engaged, the first and second cams being of identical profile and being movable integrally.
  • the first and second cams may each comprise one leg of a U-shaped stirrup to which the lever is connected, the axle being insertable in aligned bores in the cams through a selected aligned opening in the part in which the series of openings are provided.
  • the first abutment may lie more closely to the longitudinal axis of the support whilst on the other side of the support the second abutment may lie more closely to the longitudinal axis of the support.
  • neither the first or second set distance is greater than 25mm for a 60° rotation of the cam or cams.
  • the foot on which the support rests may comprise the bottom surface of the outer end of the part on which it is provided, but preferably comprises a plate secured to the bottom surface, the plate being of larger cross-sectional area than the support to spread the load transmitted through the support to the ground.
  • the inner and outer parts may both be of square cross-section, although one or both of the inner and outer parts could be round or of any other desired cross-sectional configuration.
  • the support according to the first aspect of the invention enables a novel method of adjusting the height of a structure above the ground to be carried out, and thus it is another object of the invention to provide a new or improved adjustment method.
  • a method of adjusting the height of a structure above the ground utilising a support including the steps of inserting the axle of the cam means in one of the openings of the part in which the series of openings are provided, rotating the eccentric cam or cams using the lever, about the axle thereof with the or each cam bearing on the or the respective first abutment of the other telescoped part to cause telescoping of the parts to a selected relative position, engaging the locking means to prevent telescopic retraction of the parts, rotating the cam or cams using the lever with the or each cam bearing on the second abutment to cause further telescopic extension of the parts to a further selected relative position.
  • the locking means is again then engaged to prevent telescopic retraction of the parts beyond said further relative position.
  • the method may include the step of moving the cam or cams transversely after the locking means is first engaged, to bring the cam or cams to bear on the or the respective second abutment.
  • a stop means is provided between the or at least one of the first and second abutment to prevent inadvertent transverse movement of the cam which bears on the abutments, if necessary, a movement of the cam may also be required, when transversely moving the cam to bear on the second abutment, to enable the cam to clear the stop means.
  • the invention is particularly applicable to supporting a building structure and hence it is another object of the invention to provide a new or improved building structure when supported by a support according to the first aspect of the invention.
  • the building structure may have four supports symmetrically arranged around the structure, each of the supports comprising a support in accordance with the first aspect of the invention, or the structure may have less than or more than four supports.
  • a support 10 comprises an outer part 11 and an inner part 12, both parts 11 and 12 being generally square in cross-section and there being sufficient clearance between the inner and outer parts 11, 12 to permit easy sliding of the inner part within the outer part.
  • the outer part 11 has means (not shown) to enable the part 11 to be secured to the building structure to be supported.
  • Such means may comprise plates, welded or otherwise attached, to the outer part 11, which plates may have means to receive bolts which engage the structure.
  • a foot 13 comprising a rectangular plate which, in use, spreads the load transmitted through the support to the ground.
  • the bottom of part 12 could itself provide a foot.
  • Afirst abutment comprising a bearing surface 14 is provided by a plate 15 secured to the bottom surface of the outer part 11.
  • the plate 15 has a cut out 16 therein through which the inner part 12 slides.
  • the inner part 12 has provided therein a series of openings 17, only one of which is shown in Figure 1, the openings 17 each extending right through the inner member 12 and being of substantially circular configuration. Where the inner member 12 is solid, the openings 17 would be provided as through bores, but in a preferred embodiment where the inner part 12 is provided as a box or other hollow section, the openings 17 are provided by aligned openings in opposite sides of the section.
  • the openings may be provided by formations attached to or formed in or on the part 12.
  • an axle 18 of a cam means 20 Received in the openings 17, as shown in Figure 1, is an axle 18 of a cam means 20, the cam means further comprising first and second extension cams 21 which each provide a leg of a U-shaped stirrup, the cams 21 extending either side of the support 10 as can best be seen in Figures 2 and 3, with the axle 18 passing through aligned bores 22 in each of the cams 20.
  • the cams 21 and axle 18 are a loose fit and hence transverse movement of the cams 21 along the axle 18 a well as a rotational movement about the axle 18 is permitted.
  • the cams 21 each have identical eccentric profiles 24 which as can best be seen in Figure 2, bear on the bearing surface 14 on the underside of plate 15. Hence rotation of the cams 21 about the axle 18 causes telescopic extension of the outer part 11 relative to the inner part 12 as the point of engagement of the bearing surface 14 and the eccentric cam profiles 24 varies.
  • the cam profiles 24 are of such configuration that a 60° rotation of the cams 21 will cause a 25mm vertical distance of movement between the outer part 11 and inner part 12 of the support 10.
  • cam profiles 24 can each be engaged with a second abutment comprising a bearing block 25 which is secured to the underside of plate 15. Again, if such position is adopted, a 60° movement of cams 21 would provide a 25mm vertical distance of movement between the outer part 11 and the inner part 12 of the support 10.
  • the stirrup is secured to a lever 26 which extends upwardly, the large movement of the lever, carried out to achieve a 60° cam rotation, particularly as the lever is long, affording the operator a large mechanical advantage and hence rotation of the cams 21 is achieved without undue resistance.
  • a fixing plate 23 is welded or otherwise secured to the support 10.
  • a locking means comprising a pin 27 which is provided to prevent telescopic retraction of the inner part 12 relative to the outer part 11 once the inner and outer telescoped parts have been moved by rotation of the cams 21 to their relative set posi - tions.
  • FIGS. 4a, 4b and 4c a plurality of the series of openings 17 can be seen. These openings are spaced apart by 50mm, i.e. a distance twice the distance of movement which can be achieved by a single rotation of the cams 21 through a full 60° when engaged with either surface 14 or block 25.
  • the slots 28 and 29 each extend longitudinally of the support 10 for a distance of about 45mm. Further, the slots 28, 29 are spaced apart by a distance S of about 30mm.
  • the locking pin 27 is at the upper end of the upper slot 28 and hence the load, i.s. the weight of the structure which is transmitted through the outer part 11, is transmitted to pin 27 and from pin 27 to the inner part 12 and hence to the foot 13.
  • the cams 21 may be disengaged from engagement with the first abutment 14 whilst the load is supported by the re-engaged locking pin 27.
  • cam means 20 can be transversely moved along axle 18 to bring each of the cams 21 into engagement with second abutments provided by the bearing blocks 25.
  • spacers 31 are provided on the inner sides 32 of the cams 21.
  • the cam means 20 can be released from engagement with the inner part 12 by removing the axle 18 thereof and withdrawing the U-shaped stirrup, and the cam means 20 re-engaged by inserting axle 18 through the openings in the cams 21 and through the next up opening 17 in the inner member 12.
  • the inner and outer parts 11 and 12 need not be substantially square in cross-section but one or both could be of other cross- sections, e.g. round.
  • cams 21 each comprising one leg of a U-shaped stirrup, if desired only one cam need be provided on one side of the support, or two cams may be provided not on a stirrup, although the described arrangement is preferred.
  • any other means for locking the inner and outer parts relatively whilst adjusting the position of the cam means 20 longitudinally and/or transversely could be used.
  • first and second abutments have been described as being provided by first the bearing surface 14 on the underside of a plate 15, and secondly a bearing block 25 secured to the underside of the plate 15, if desired one of the abutments could be provided by the bottom edge of the outer part 11, and the other abutment by a cut-out in that bottom edge, or by an abutment welded or otherwise secured to the outer part 11.
  • the inner part 12 has been provided with the series of openings, and the cams 21 bear on the outer telescoped part.
  • the cams may bear on the inner telescoped part in which case the outer telescoped part may have a series of openings to support the axle of the cam means.
  • the support 10 described and the method described with the steps thereof carried out in the opposite order could be used for controlled lowering of the height of the structure.
  • the invention is particularly applicable to a building structure, but could be used in supporting other structures as required.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Claims (12)

1. Support (10) possédant une partie interne (12) montée de façon télescopique à l'intérieur d'une partie externe (11) avec l'une desdites parties interne (12) et externe (11) possédant des moyens pour fixer la partie à une structure à supporter, l'autre desdites parties interne (12) et externe (11 ) possédant une base (13) pour coopérer avec le sol, la partie interne (12) ou externe (11 ) possédant le long de sa longueur une série d'ouvertures (17), chaque ouverture étant apte à recevoir un tourillon (18) de moyens à came (20), les moyens à came (20) comprenant en outre une came excentrique (21 ) qui agit respectivement sur la partie de support externe ou interne, et des moyens à levier (26) pour faire tourner la came (21 ) et de ce fait provoquer l'extension télescopique des parties, des moyens de blocage (27) étant prévus pour éviter la rétraction télescopique des- parties (11, 12) quand les parties interne (12) et externe (11) sont dans des positions relatives sélectionnées, caractérisé en ce que la partie interne (12) ou externe (11) sur laquelle porte la came possède des première (14) et seconde (25) butées en des positions décalées longitudinalement sur le support (10), et la came (21 ) peut être amenée de façon sélective en engagement avec les première (14) et seconde (25) butées.
2. Support selon la revendication 1, caractérisé en ce que les séries d'ouvertures (17) de la partie interne (12) ou externe (11 ) sont espacées régulièrement, et les parties interne (12) et externe (11 ) peuvent se déplacer télescopiquement l'une par rapport à l'autre sur une première distance établie en amenant la came (21) en engagement avec la première butée (14) et sur une seconde distance établie en amenant ensuite la came (21) en engagement avec la seconde butée (25), les première et seconde distances établies s'additionnant jusqu'à une distance établie totale équivalant à l'espacement entre les ouvertures (17) de la partie interne (12) ou externe (11).
3. Support selon la revendication 1 ou la revendication 2, caractérisé en ce que les première (14) et seconde (25) butées, tout en étant déplacées longitudinalement, sont déplacées transversalement, et la came (21 ) peut être déplacée transversalement le long de son axe de rotation pour permettre à la came (21) devenir en engagement avec les première ou seconde butées (14, 25).
4. Support selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la partie (11 ) sur laquelle porte la came (21 ) est munie d'un orifice (28, 29) qui peut être amené en alignement avec chacune des ouvertures (17) de la série d'ouvertures de l'autre partie (12), les moyens de blocage (27), en cours d'utilisation, étant reçus dans l'orifice (28,29) et dans l'une de la série d'ouvertures (17) qui est en alignement pour bloquer de façon relative les parties interne (12) et externe (11 ) à l'encontre de leur rétraction télescopique.
5. Support selon la revendication 4 lorsqu'elle dépend de la revendication 2, caractérisé en ce que deux orifices (28, 29) sont prévus dans la partie (11 ) sur laquelle porte la came (21 ), chaque orifice (28, 29) s'étendant longitudinalement par rapport au support (10) sur une distance sensiblement égale à la première ou à la seconde distance établie, selon celle qui est la plus importante.
6. Supportselon l'une quelconque des revendications précédentes, caractérisé en ce que la première butée (14) est prévue sur la partie externe (11 ) et comprend une surface d'appui à l'extrémité de la partie externe (11 ) dans laquelle la partie interne (12) est reçue et la seconde butée (25) comprend un bloc de support fixé à l'extrémité de la partie externe (11).
7. Supportselon l'une quelconque des revendications précédentes, caractérisé en ce que des moyens d'arrêt (20) sont prévus entre les première (14) et seconde (25) butées pour éviter un mouvement transversal incontrôlé de la came (21 ).
8. Support selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens à came (20) comprennent une seconde came excentrique, la première came mentionnée et la seconde came étant situées sur des côtés opposés du support (10), la partie comprenant les première et seconde butées (14, 25) possédant d'autres butées (14, 15) avec lesquelles la seconde came (21 ) peut venir en engagement, les première et seconde cames (21) ayant un profil identique (24) et pouvant être déplacées en commun.
9. Support selon l'une quelconque des revendications 2 à 8 quand elle dépend de la revendication 2, caractérisé en ce que ni la première ni la seconde distance établie n'est supérieure à 25 mm pour une rotation sur 60° de la ou des cames (21 ).
10. Support selon l'une quelconque des revendications précédentes, caractérisé en ce que la base (13) sur laquelle repose le support (10) comprend une plaque fixée à la surface inférieure, la plaque ayant une surface en coupe plus importante que le support (10) pour répartir la charge transmise par le support (10) vers le sol.
11. Procédé pour ajuster la hauteur d'une structure au-dessus du sol en utilisant un support selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le procédé comprend les étapes consistant à insérer le tourillon (18) des moyens à came (20) dans l'une des ouvertures (17) de la partie dans laquelle est prévue la série d'ouvertures (17), à faire tourner la ou les cames excentriques (21 ) en utilisant le levier (26) autour de l'axe de leur tourillon (18) avec la ou chacune des cames (21 ) portant sur la butée ou la première butée respective (14) de l'autre partie (11) pour provoquer une extension télescopique des parties vers une position relative sélectionnée, à engager les moyens de blocage (27) pour éviter la rétraction télescopique des parties, à faire tourner la ou les cames (21) en utilisant le levier (26) avec la ou chaque came (21 ) portant contre la seconde butée (25), pour provoquer la poursuite du déploiement télescopique des parties (11, 12) vers une autre position relative sélectionnée.
12. Structure pour construction, lorsqu'elle est supportée par un support (10) selon l'une quelconque des revendications 1 à 10.
EP84108718A 1983-08-10 1984-07-24 Supports de structures et structures comportant ces supports Expired EP0134524B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8321498 1983-08-10
GB838321498A GB8321498D0 (en) 1983-08-10 1983-08-10 Supports for structures

Publications (3)

Publication Number Publication Date
EP0134524A2 EP0134524A2 (fr) 1985-03-20
EP0134524A3 EP0134524A3 (en) 1985-04-17
EP0134524B1 true EP0134524B1 (fr) 1986-09-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108718A Expired EP0134524B1 (fr) 1983-08-10 1984-07-24 Supports de structures et structures comportant ces supports

Country Status (3)

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EP (1) EP0134524B1 (fr)
DE (1) DE3460769D1 (fr)
GB (2) GB8321498D0 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2763578B1 (fr) * 1997-05-21 1999-07-16 Jean Claude Chenu Perfectionnement d'un dispositif de levage manuel utilisant une came pivotante
CN116517339B (zh) * 2023-05-22 2026-02-27 海力控股集团有限公司 一种装配式墙体与支撑件的小型连接加固装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1062995A (fr) * 1952-09-16 1954-04-28 Solma étai réglable
GB982839A (en) * 1961-05-11 1965-02-10 Shepherd Woodwork Ltd Improvements in or relating to supports for structures
AT327503B (de) * 1973-06-26 1976-02-10 Fellinger Heinrich Langenverstellbare stutze

Also Published As

Publication number Publication date
EP0134524A3 (en) 1985-04-17
GB8418620D0 (en) 1984-08-22
GB2144713A (en) 1985-03-13
GB8321498D0 (en) 1983-09-14
EP0134524A2 (fr) 1985-03-20
GB2144713B (en) 1986-07-30
DE3460769D1 (en) 1986-10-23

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