WO2018015603A1 - Étai à dispositif de renforcement - Google Patents

Étai à dispositif de renforcement Download PDF

Info

Publication number
WO2018015603A1
WO2018015603A1 PCT/ES2017/070523 ES2017070523W WO2018015603A1 WO 2018015603 A1 WO2018015603 A1 WO 2018015603A1 ES 2017070523 W ES2017070523 W ES 2017070523W WO 2018015603 A1 WO2018015603 A1 WO 2018015603A1
Authority
WO
WIPO (PCT)
Prior art keywords
strut
tubular sleeve
holes
inner tube
work
Prior art date
Application number
PCT/ES2017/070523
Other languages
English (en)
Spanish (es)
Inventor
Jose Luis Ubiñana Felix
Original Assignee
Sistemas Tecnicos De Encofrados, S.A.
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 Sistemas Tecnicos De Encofrados, S.A. filed Critical Sistemas Tecnicos De Encofrados, S.A.
Priority to MX2018016256A priority Critical patent/MX2018016256A/es
Priority to EP17768163.2A priority patent/EP3489437A1/fr
Publication of WO2018015603A1 publication Critical patent/WO2018015603A1/fr
Priority to CONC2018/0013823A priority patent/CO2018013823A2/es

Links

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
    • 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
    • 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
    • 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
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
    • 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 a construction strut with a reinforcement device that provides reinforcement in the buckling resistance of the strut.
  • a construction strut is a telescopic element that is used as a temporary support for structures during construction work or repair of structures or in situations where there is a risk that a structure will collapse, among other applications.
  • construction struts can be used to support the walls of a formwork mold until the concrete has hardened and the walls of the mold can be removed.
  • a construction strut comprises two telescopic tubes, that is, an inner tube that can be moved inside an outer tube and a system for fixing the inner and outer tubes to each other.
  • Said fixing system usually consists of a plurality of pairs of holes distributed along the length of the inner tube arranged in diametrically opposite positions and of a fixing piece that passes through one of said pairs of holes to prevent relative movement between the outer and inner tubes.
  • the extension of the strut is discretely regulated by means of the fixing piece.
  • the outer tube comprises at its upper end a nut on which the fixing piece is supported.
  • the versatility provided by the adjustable length allows the construction struts to cover a wide range of lengths, its maximum length being that in which the inner tube has been removed the maximum from the outer tube.
  • its maximum length being that in which the inner tube has been removed the maximum from the outer tube.
  • the greater the length of the strut during use the lower its resistance to buckling, with the risk that the strut collapses and ceases to perform its structural function when it operates with lengths close to its maximum length.
  • high loads can also cause the buckling of the strut even if its length is not close to its maximum length.
  • the only existing solution is to increase the number of struts to distribute the load that supports each strut. As a result, the cost of the use of construction struts is increased by the need for a greater number of construction struts and, also, for a longer installation and removal time.
  • the present invention aims to solve the aforementioned problems of work props.
  • the present invention discloses a construction strut comprising two telescopic tubes, formed by an outer tube and an inner tube, and a fixing piece of the outer and inner tubes with each other, the outer tube comprising a nut of adjustment at its upper end, the inner tube being able to move inside the outer tube and said inner tube comprising a plurality of pairs of holes distributed along its length, the holes of said pairs of holes being arranged in diametrically positions opposite the inner tube, said fixing piece passing through one of said pairs of holes in the inner tube to prevent relative movement between the outer and inner tubes, characterized by having a reinforcing device, said reinforcing device comprising a susceptible tubular sleeve from sliding the outside of the inner tube of the work strut and said tubular sleeve comprising fixing means to the work strut.
  • the object of the present invention is also a reinforcement device for said work strut characterized by comprising a tubular sleeve capable of sliding outside the inner tube of the work strut and said tubular sleeve comprising means for fixing to the work strut.
  • another object of the present invention is the use of said reinforcement device in a construction strut to reinforce the buckling resistance of the strut.
  • the work strut object of the present invention has a reinforced buckling resistance thanks to the reinforcement device, increasing the load necessary for the strut to collapse by buckling.
  • the work strut object of the present invention guarantees the stability and safety of a structure against high axial loads with a smaller number of struts compared to work struts that do not comprise said reinforcement device. Consequently, by requiring less amount of construction struts, the installation and removal time of the struts is less and its cost more economical.
  • the reinforcement device object of the present invention requires little installation time since the tubular sleeve must simply be slid outside the inner tube of the strut and fixed to the work strut.
  • the length of the reinforcement device even allows the strut to be transported without the need to remove said reinforcement device, whereby the strut and its device can be transported and stored without separating, avoiding the need to place the reinforcement device in the strut before each use.
  • the reinforcement device can also be removed easily and quickly, releasing it from the strut and sliding it outside the inner tube outwards.
  • the fixing means of the tubular sleeve to the strut comprise a pair of holes arranged in diametrically opposite positions of the tubular sleeve so that the fixing piece passes through the pair of holes of the tubular sleeve to fix it to the work strut.
  • the fixing part of the inner and outer tubes also passes through the holes of the tubular sleeve, the tubular sleeve being fixed to the work post.
  • tubular sleeve is in contact with the adjusting nut of the upper end of the outer tube of the strut. In this position the possible angular movement between the inner and outer tubes of the work strut due to loads is minimized.
  • the tubular sleeve comprises a perimeter fin at one of its ends.
  • the contact surface is larger, so that the stresses and stresses generated are lower.
  • the flap facilitates manual operation of the device and helps align both strut tubes.
  • Figure 1 shows a perspective view of an embodiment of a reinforcement device for work struts object of the present invention.
  • Figure 2 shows a front elevation view of the device of Figure 1.
  • Figure 3 shows a perspective view of a construction strut incorporating a reinforcement device according to the present invention.
  • Figure 4 shows an enlarged perspective view of a detail of Figure 3 in which the area of the construction strut in which the reinforcement device is located has been enlarged.
  • Figure 5 shows a front elevation view of 5 construction struts in different length configurations, in which only the construction struts b and c comprise a reinforcement device object of the present invention.
  • the reinforcement device -1 - for a work strut object of the present invention consists of a tubular sleeve -10- comprising at one of its ends a perimetral fin -1 1 -.
  • the tubular sleeve -10- comprises two holes -12-, -12'- arranged in diametrically opposite positions.
  • Figures 3 and 4 show a work strut -2- object of the present invention comprising the reinforcement device -1 - of figures 1 and 2.
  • the strut -2- comprises an inner tube -20- and an outer tube -21 - fixed to each other through a fixing piece -22-, presenting the outer tube -21 -, in its upper part, an adjustment nut -21 '- for the most precise regulation of the extension of the strut -2 - which has handles -21 "- for manual operation.
  • the strut -2- presents at its ends flat pieces -23-, -23'- that facilitate the contact of the strut -2- with the surfaces of the structures it supports.
  • the inner tube -20- of the strut -2- comprises a plurality of pairs of holes arranged in diametrically opposite positions, only one hole -24- of each pair of holes being observed in Figures 3 and 4.
  • the inner tube -20- of the strut -2- is inserted inside the tubular sleeve -10-, said tubular sleeve -10- being supported on the adjusting nut -21 '- of the upper end of the outer tube -21 - a through the perimeter fin -1 1 -.
  • the holes -12-, -12'- of the tubular sleeve -10- being arranged diametrically opposite, in the same way as the pairs of holes -24- of the inner tube -20- of the strut -2-, allow the fixing piece -22- crosses both the holes -24- of the inner tube and the holes -12-, -12'- of the tubular sleeve -10-, thus achieving the fixation of the tubular sleeve -10- to the strut -2- ( Figures 3 and 4).
  • the regulation of the relative positions between the inner -20- and outer tubes -21 - of the strut -2- allows to achieve a wide range of lengths, as shown by the different configurations of Figure 5.
  • figure 5c corresponds to the position of shorter strut length -2- when it has the reinforcement device -1 - object of the present invention, showing figure 5d the same strut length -2- without reinforcement device - 1 -
  • the reinforcement device -1 - In order to use the strut -2- in smaller lengths (see figures 5e and 5f), the reinforcement device -1 - must be removed, in which cases it is not possible to use the reinforcement device -1 - to increase the buckling resistance of the strut -2- because there is no space. In these cases, however, due to the short length of the strut -2-, the buckling resistance is not compromised, and the use of the device -1 - object of the present invention is usually not necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Tents Or Canopies (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Reinforcement Elements For Buildings (AREA)

Abstract

L'invention concerne un étai équipé d'un dispositif de renforcement. L'invention concerne un étai qui comprend un tube extérieur, un tube intérieur et une pièce de fixation conçue pour fixer les tubes l'un à l'autre, le tube extérieur comprenant un écrou d'ajustement sur son extrémité supérieure, le tube intérieur pouvant se déplacer à l'intérieur du tube extérieur et comprenant également une pluralité de paires de trous répartis sur toute sa longueur, lesdits trous étant disposés dans des positions diamétralement opposées au tube intérieur, une desdites paires de trou du tube intérieur traversant ladite pièce de fixation pour empêcher le mouvement relatif entre les tubes extérieur et intérieur. L'étai est caractérisé en ce qu'il est équipé d'un dispositif de renforcement. Ledit dispositif de renforcement comprend un manchon tubulaire qui peut coulisser sur l'extérieur du tube intérieur de l'étai et qui comprend des moyens de fixation à l'étai.
PCT/ES2017/070523 2016-07-21 2017-07-20 Étai à dispositif de renforcement WO2018015603A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MX2018016256A MX2018016256A (es) 2016-07-21 2017-07-20 Puntal de obra con dispositivo de refuerzo.
EP17768163.2A EP3489437A1 (fr) 2016-07-21 2017-07-20 Étai à dispositif de renforcement
CONC2018/0013823A CO2018013823A2 (es) 2016-07-21 2018-12-19 Puntal de obra con dispositivo de refuerzo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201630998A ES2651193B1 (es) 2016-07-21 2016-07-21 Puntal de obra con dispositivo de refuerzo
ESP201630998 2016-07-21

Publications (1)

Publication Number Publication Date
WO2018015603A1 true WO2018015603A1 (fr) 2018-01-25

Family

ID=59887298

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2017/070523 WO2018015603A1 (fr) 2016-07-21 2017-07-20 Étai à dispositif de renforcement

Country Status (5)

Country Link
EP (1) EP3489437A1 (fr)
CO (1) CO2018013823A2 (fr)
ES (1) ES2651193B1 (fr)
MX (1) MX2018016256A (fr)
WO (1) WO2018015603A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR904545A (fr) * 1944-05-24 1945-11-08 étai extensible, notamment pour travaux de construction
FR2628466A1 (fr) * 1988-03-09 1989-09-15 Rennepont Sa Etai de longueur reglable
ES1028234U (es) * 1994-06-07 1994-12-16 Perez Pedro Garcia Dispositivo de sujecion en puntales telescopicos para obras.
EP0869235A1 (fr) * 1997-04-04 1998-10-07 Ingenieria de Encofrados y Servicios, S.L. Perfectionnements aux étais
JP2006063653A (ja) * 2004-08-27 2006-03-09 Kenji Kobayashi 仮設工事用サポートのピン受け用ナットにおけるキャップ

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1356174A (fr) * 1964-06-26 Broche pour verrouillage l'un par rapport à l'autre de deux tubes coulissant télescopiquement l'un dans l'autre
FR1144762A (fr) * 1956-01-24 1957-10-17 étai tubulaire constituant un vérin de levage
ES361339A1 (es) * 1968-12-12 1970-11-16 Coal Industry Patens Limited Un dispositivo de soporte deformable para un techo de mina.
FR2323845A1 (fr) * 1975-09-11 1977-04-08 Self Lock Echafaudages Dispositif de decoffrage pour montants ou tours d'echafaudage de soutenement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR904545A (fr) * 1944-05-24 1945-11-08 étai extensible, notamment pour travaux de construction
FR2628466A1 (fr) * 1988-03-09 1989-09-15 Rennepont Sa Etai de longueur reglable
ES1028234U (es) * 1994-06-07 1994-12-16 Perez Pedro Garcia Dispositivo de sujecion en puntales telescopicos para obras.
EP0869235A1 (fr) * 1997-04-04 1998-10-07 Ingenieria de Encofrados y Servicios, S.L. Perfectionnements aux étais
JP2006063653A (ja) * 2004-08-27 2006-03-09 Kenji Kobayashi 仮設工事用サポートのピン受け用ナットにおけるキャップ

Also Published As

Publication number Publication date
CO2018013823A2 (es) 2019-01-18
MX2018016256A (es) 2019-04-15
ES2651193A1 (es) 2018-01-24
EP3489437A1 (fr) 2019-05-29
ES2651193B1 (es) 2018-11-30

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