EP0389256A1 - Schraubenwinde für Baustütze - Google Patents

Schraubenwinde für Baustütze Download PDF

Info

Publication number
EP0389256A1
EP0389256A1 EP90303020A EP90303020A EP0389256A1 EP 0389256 A1 EP0389256 A1 EP 0389256A1 EP 90303020 A EP90303020 A EP 90303020A EP 90303020 A EP90303020 A EP 90303020A EP 0389256 A1 EP0389256 A1 EP 0389256A1
Authority
EP
European Patent Office
Prior art keywords
jack
bearing cap
building support
handle
projections
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.)
Withdrawn
Application number
EP90303020A
Other languages
English (en)
French (fr)
Inventor
John Kemp
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.)
Aluma Systems Canada Inc
Aluma Systems (uk) Ltd
Original Assignee
Aluma Systems Canada Inc
Aluma Systems (uk) 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 Aluma Systems Canada Inc, Aluma Systems (uk) Ltd filed Critical Aluma Systems Canada Inc
Publication of EP0389256A1 publication Critical patent/EP0389256A1/de
Withdrawn legal-status Critical Current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
    • 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
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/02—Scaffold feet, e.g. with arrangements for adjustment
    • 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
    • E04G2025/042—Shores or struts; Chocks telescopic with devices to avoid accidental disengagement of the telescopic elements, e.g. during transport

Definitions

  • the present invention relates to jacks for building supports which are generally of tubular construction and may comprise either a single tube or two or more tubes mounted to slide with respect to one another in the manner of a telescope.
  • Such building supports are typically used to support scaffolding or formwork or for shoring purposes. Since it is impracticable to produce building supports in the very wide range of lengths in which they are commonly required it is usual to mount them on a jack so as to permit their effective length to be readily altered.
  • a typical known jack of this type is disclosed in DE-A-3641349 and comprises an externally screw-threaded jack screw which passes through an internally threaded hole in a jack handle.
  • the upper surface of the jack handle engages the lower surface of the building support and as the jack handle is rotated it moves up and down the jack screw and thus moves the building support with it.
  • toggle connectors constitute a separate mechanical component which must be connected to the building support and are prone to damage and to becoming clogged or otherwise rendered inoperative by the concrete and the like which is normally present in the environment in which such supports are used. More importantly, it is usual to use only one toggle connector and such connectors are inherently relatively weak and are sometimes unable to maintain the connection between the building support and the jack when the building support is lifted, particularly when further, relatively heavy building accessories are connected to the jack, e.g. cross-braces, a supporting platform or the like. It will be appreciated that if such further building accessories are connected to the jack their weight must be carried by the toggle connector if the building support is lifted from above.
  • a jack for a building support comprises a jack screw with an external screw thread, a jack handle with an internal screw thread in engagement with the external screw thread and a bearing cap which engages the jack handle and includes a base through which the jack screw passes and which, in use, engages and supports the building support, the bearing cap including connecting means by which it may be connected to the building support and the jack handle or the bearing cap having a radially outwardly directed annular groove into which extends at least radially inwardly extending projections on the bearing cap or the jack handle.
  • the building support is not connected to the jack handle but may be firmly connected to a bearing cap which is in turn connected to the jack handle by a cooperating groove and projection which permit relative rotation but no relative longitudinal movement.
  • the elimination of the conventional toggle clip enables the building support to be firmly connected to the bearing cap and the latter to be firmly connected to the jack handle by means which permit relative rotation whereby the risk of the jack and the building support becoming disconnected when lifted by way of the building support is eliminated.
  • the use of a simple annular groove and projections is not only cheap, simple and reliable but also eliminates the risk of the connector becoming clogged or damaged.
  • both projections may be movably or removably secured to the bearing cap or the jack handle.
  • the projections may both be of part annular form. It is however preferred for reasons of both simplicity and manufacturing convenience that one and preferably two projections are integral with the bearing cap or the jack. handle. It is preferred that the two projections are diametrically opposed so as to provide the maximum security of the connection and in this event the opposing edges of the two projections will be substantially straight and parallel.
  • the jack is then assembled by moving the projections laterally with respect to the groove to insert them into the groove and subsequent undesired lateral movement is then prevented by the jack screw.
  • the distance between the opposing edges of the said two projections is substantially equal to the diameter of the base of the radial groove.
  • a third projection which could be of part annular shape, which extends transverse to the lateral direction of relative movement of the jack handle and the bearing cap when they are assembled together.
  • annular groove could be provided on either of the bearing cap and the jack handle it is preferred that it is formed on the bearing cap and that the projections are formed on the jack handle.
  • the bearing cap includes a cylindrical wall upstanding from the outer edge of the base which defines a space which, in use, accommodates the lower end of the building support. This imparts yet further structural rigidity to the combination of the jack and the building support.
  • the invention also embraces a jack of the type referred to above in combination with a tubular building support whose lower end engages the base of the bearing cap and into whose interior the jack screw extends.
  • This combination also preferably includes a stabilising member connected to the jack screw within the tubular support which engages opposed internal walls of the support.
  • the means by which the bearing cap and the tubular support are connected may take various forms but it is preferred that it is constituted by holes in the cylindrical wall of the bearing cap and in the building support through which bolts, pegs or other similar fasteners pass.
  • the jack comprises an externally threaded jack screw 1 which passes through a hole in a jack handle 2 and a hole in the bottom plate of a cup-shaped bearing cap 3.
  • the jack screw 1 comprises a hollow tube whose lower end is welded to a base plate 4. On its outer surface the jack screw has an external screw thread which meshes with a corresponding internal thread on the inner wall of an annular portion 5 of the jack handle 2.
  • the jack handle is a one-piece casting and integral with its annular portion 5 are two diametrically opposed, radially outwardly extending handles 6. Integral with the upper surface of the two handles are respective, diametrically opposed retaining formations, each of which is straight and extends parallel to the tangent at the nearest point of the hole in the annular portion 5.
  • Each retaining formation comprises an upstanding web 7 integral with whose upper end is an inwardly extending web or rim 8 whose inner edge is also straight.
  • the bearing cap 3 is also a one-piece casting and comprises a lower circular plate 9 in which there is a circular central hole 10 whose diameter is substantially the same as that of the jack screw 1. Integral with the edge of the plate 9 is an upstanding cylindrical wall 11 in which two diametrically opposed holes 14 are formed. Integrally depending from the plate 9 is a coaxial annular flange with a thickened portion 12 at its lower end whose diameter is greater than that at its upper end whereby an annular groove or recess 13 is defined whose diameter is substantially the same as the space between the inwardly directed edges of the webs 8 on the jack handle.
  • the jack is assembled by sliding the thickened portion 12 on the bearing cap laterally into the spaces beneath the horizontal webs 8.
  • the jack screw 1 is then threaded through the jack handle 2 and passed through the hole in the bearing cap 3.
  • the jack handle is thus laterally located with respect to the bearing cap by the jack screw and vertically located by engagement of the webs 8 in the annular groove 13. If the jack handle is rotated with respect to the jack screw the webs 8 can rotate without impediment in the groove 13 and the jack handle will move up or down the jack screw and move the bearing cap with it.
  • a tubular building support 15 whose outer size and shape correspond to those of the internal space of the bearing cap 3, is placed within the bearing cap 3.
  • Bolts or retaining pegs 16 are then passed through the holes 14 in the bearing cap and corresponding holes in the building support.
  • the matching shapes of the building support and the bearing cap coupled with the retaining pegs 16 impart considerable lateral stability to the building support but this stability is further enhanced by a metallic stabiliser 17 which is fitted over the top of the jack screw and connected thereto by a fastener 18 and which engages or is a close fit within the building support.
  • the stabiliser 17 also prevents the jack screw being inadvertently screwed out of the jack handle.
  • the building support is thus securely located with respect to the bearing cap which in turn is securely located laterally and axially with respect to the jack handle by the webs 8 and the jack screw 1, respectively.
  • the bearing cap and the jack handle are of course normally urged against one another by the load supported by the building support. However, if it is necessary to lift the jack by way of the building support, the longitudinal connection of the bearing cap and the jack handle enables the lifting force to be reliably transmitted to the jack handle and thus the jack screw without any risk of the jack becoming wholly or partially disassembled by the lifting force.
  • the upstanding formation on the jack handle is a full annulus with a groove in its outer surface and the lower end of the bearing cap is provided with two separate straight formations, i.e. the relative positions of the two halves of the connection between the bearing cap and the jack handle are reversed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP90303020A 1989-03-21 1990-03-21 Schraubenwinde für Baustütze Withdrawn EP0389256A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8906435A GB2229419A (en) 1989-03-21 1989-03-21 Jacks for building supports.
GB8906435 1989-03-21

Publications (1)

Publication Number Publication Date
EP0389256A1 true EP0389256A1 (de) 1990-09-26

Family

ID=10653715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90303020A Withdrawn EP0389256A1 (de) 1989-03-21 1990-03-21 Schraubenwinde für Baustütze

Country Status (5)

Country Link
EP (1) EP0389256A1 (de)
FI (1) FI901401A (de)
GB (1) GB2229419A (de)
NO (1) NO901284L (de)
PT (1) PT93508A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675551A1 (fr) * 1991-04-22 1992-10-23 Rennepont Perfectionnements aux ecroux d'etais.
WO1993002266A1 (en) * 1991-07-17 1993-02-04 Speral Aluminium Inc. Modular scaffolding assembly
US5240089A (en) * 1991-07-17 1993-08-31 Speral Aluminum Inc. Modular scaffolding assembly
KR100802165B1 (ko) 2007-06-29 2008-02-12 서보산업 주식회사 자키 베이스
FR2933435A1 (fr) * 2008-07-01 2010-01-08 Comabi Accessoire de maintien de pieds d'echafaudage
FR3005085A1 (fr) * 2013-04-30 2014-10-31 Godon Sas Element d'extremite pour tour d'etaiement comportant une manette et un organe de support
CN104968598A (zh) * 2012-07-20 2015-10-07 P·法夸尔森 千斤顶和支撑装置
WO2017162415A1 (de) * 2016-03-22 2017-09-28 Peri Gmbh Gerüstelement mit einem trägerkopf und baugerüst mit einem solchen gerüstelement
CN107268974A (zh) * 2017-06-29 2017-10-20 来安荣盛金属制品有限公司 一种高弹性卡接式脚手架底座
US10975585B2 (en) 2018-10-15 2021-04-13 Peri Formwork Systems, Inc. Connection assembly for formwork
KR20210100062A (ko) * 2019-09-11 2021-08-13 정은용 시스템 서포트용 유 헤드 잭
CN114704108A (zh) * 2022-04-29 2022-07-05 江苏鸿基节能新技术股份有限公司 建筑物增层用顶升装置
JP7531334B2 (ja) 2020-07-01 2024-08-09 日建リース工業株式会社 支持ジャッキ装置の保持具

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2283515B (en) * 1993-11-01 1997-04-02 Premier Profiles Ltd A height adjuster
GB2295139A (en) * 1994-11-17 1996-05-22 Paul Eisinger Jack for replacement bay windows
GB2370829B (en) * 2001-01-04 2002-10-23 Christopher Nicholls Adjustable structural bay pole (3 part)
GB2443181A (en) * 2006-10-27 2008-04-30 Christopher Nicholls Screwed support jack
NZ593685A (en) * 2010-06-25 2012-12-21 Glenn Ranald Keen Screw Jack for adjusting the effective height of a building support pile.
CN103132686A (zh) * 2011-11-24 2013-06-05 徐秉朗 脚手架底脚胀紧器
CN107269026B (zh) * 2017-06-09 2019-07-05 新疆荣葳环境建设集团有限公司 多支杆型建筑支架

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864729A (en) * 1958-08-29 1961-04-06 R D Werner Company Inc Adjustable leg, particularly for scaffolding
GB1154630A (en) * 1967-06-16 1969-06-11 Mould & Construction Company L Improvements relating to Jacking and Coupling Devices.
FR2026534A1 (de) * 1968-12-19 1970-09-18 Access Equipment Ltd
FR2266781A1 (en) * 1974-04-08 1975-10-31 Rennepont Ets Telescopic prop mfg. method - has projection on sleeve in locking sleeve groove formed by ring and flanged end
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
DE8232446U1 (de) * 1982-11-19 1983-05-11 Hünnebeck GmbH, 4030 Ratingen Stahlrohrstütze für Deckenschalungen oder dergleichen mit Schnellabsenkung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB500085A (en) * 1938-03-18 1939-02-02 Adria S A Improvements in and relating to adjustable props for supporting falsework

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB864729A (en) * 1958-08-29 1961-04-06 R D Werner Company Inc Adjustable leg, particularly for scaffolding
GB1154630A (en) * 1967-06-16 1969-06-11 Mould & Construction Company L Improvements relating to Jacking and Coupling Devices.
FR2026534A1 (de) * 1968-12-19 1970-09-18 Access Equipment Ltd
FR2266781A1 (en) * 1974-04-08 1975-10-31 Rennepont Ets Telescopic prop mfg. method - has projection on sleeve in locking sleeve groove formed by ring and flanged end
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
DE8232446U1 (de) * 1982-11-19 1983-05-11 Hünnebeck GmbH, 4030 Ratingen Stahlrohrstütze für Deckenschalungen oder dergleichen mit Schnellabsenkung

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675551A1 (fr) * 1991-04-22 1992-10-23 Rennepont Perfectionnements aux ecroux d'etais.
WO1993002266A1 (en) * 1991-07-17 1993-02-04 Speral Aluminium Inc. Modular scaffolding assembly
US5240089A (en) * 1991-07-17 1993-08-31 Speral Aluminum Inc. Modular scaffolding assembly
US5263296A (en) * 1991-07-17 1993-11-23 Speral Aluminium Inc. Modular scaffolding assembly
KR100802165B1 (ko) 2007-06-29 2008-02-12 서보산업 주식회사 자키 베이스
FR2933435A1 (fr) * 2008-07-01 2010-01-08 Comabi Accessoire de maintien de pieds d'echafaudage
EP2874936A4 (de) * 2012-07-20 2017-07-26 Phillip Farquharson Wagenheber und stützvorrichtung
CN104968598A (zh) * 2012-07-20 2015-10-07 P·法夸尔森 千斤顶和支撑装置
FR3005085A1 (fr) * 2013-04-30 2014-10-31 Godon Sas Element d'extremite pour tour d'etaiement comportant une manette et un organe de support
WO2017162415A1 (de) * 2016-03-22 2017-09-28 Peri Gmbh Gerüstelement mit einem trägerkopf und baugerüst mit einem solchen gerüstelement
AU2017236137B2 (en) * 2016-03-22 2022-06-02 Peri Se Frame element with a support head, and building scaffold comprising such a frame element
CN107268974A (zh) * 2017-06-29 2017-10-20 来安荣盛金属制品有限公司 一种高弹性卡接式脚手架底座
US10975585B2 (en) 2018-10-15 2021-04-13 Peri Formwork Systems, Inc. Connection assembly for formwork
KR20210100062A (ko) * 2019-09-11 2021-08-13 정은용 시스템 서포트용 유 헤드 잭
JP7531334B2 (ja) 2020-07-01 2024-08-09 日建リース工業株式会社 支持ジャッキ装置の保持具
CN114704108A (zh) * 2022-04-29 2022-07-05 江苏鸿基节能新技术股份有限公司 建筑物增层用顶升装置
CN114704108B (zh) * 2022-04-29 2024-03-01 江苏鸿基节能新技术股份有限公司 建筑物增层用顶升装置

Also Published As

Publication number Publication date
PT93508A (pt) 1992-03-31
FI901401A (fi) 1990-09-22
NO901284L (no) 1990-09-24
GB2229419A (en) 1990-09-26
FI901401A0 (sv) 1990-03-20
NO901284D0 (no) 1990-03-20
GB8906435D0 (en) 1989-05-04

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