EP1611300A1 - Multiple supporting element - Google Patents

Multiple supporting element

Info

Publication number
EP1611300A1
EP1611300A1 EP04719158A EP04719158A EP1611300A1 EP 1611300 A1 EP1611300 A1 EP 1611300A1 EP 04719158 A EP04719158 A EP 04719158A EP 04719158 A EP04719158 A EP 04719158A EP 1611300 A1 EP1611300 A1 EP 1611300A1
Authority
EP
European Patent Office
Prior art keywords
supporting element
pivot
support surface
rod
coupling
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Withdrawn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
EP04719158A
Other languages
German (de)
French (fr)
Inventor
Christiaan Arnold Schuts
Petrus Geertruida Cornelis Vos
Adrianus Cornelis Maria Jacobs
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.)
Holmatro BV
Original Assignee
Holmatro Industrial Equipment BV
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 Holmatro Industrial Equipment BV filed Critical Holmatro Industrial Equipment BV
Publication of EP1611300A1 publication Critical patent/EP1611300A1/en
Withdrawn legal-status Critical Current

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
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/26—Strutting means for wall parts; Supports or the like, e.g. for holding in position prefabricated walls

Definitions

  • the invention relates to a supporting element for at least one rod of a rod assembly for exerting forces on a construction, wherein the supporting element comprises: a body which is provided with at least one partially spherical cavity for receiving a pivot and which has at least one support surface which is adapted to contact the construction, and at least one pivot which is connected to a coupling and which is adapted for coupling to the rod.
  • Such a supporting element is known from NL-A-9202239.
  • Such a prior art supporting element is only suitable for exerting on a construction a force originating from only one rod. This means in practice that the rod must extend transversely of the surface on which the force must be exerted, or that a combination of different supporting elements must be made in order to be able to work with a plurality of rods, as is usually the case in practice.
  • the assembly of a combination of such supporting elements requires joining together two or more such supporting elements. This involves the danger of relative shifting of the supporting elements, which can cause unstable and therefore hazardous situations. Constructing a ' rod assembly with such separate supporting elements is furthermore difficult; separate supporting elements must often be held fast in positions which are difficult to access before the above stated supporting element is fixed by co- action with other supporting elements of the same group.
  • the object of the present invention is to provide such a supporting element which does not result in these drawbacks.
  • This object is achieved in that the body is provided with at least one second cavity for a second pivot, and that the device comprises a second pivot which is adapted for coupling to a second rod of the rod assembly.
  • this supporting element it is thus possible with this supporting element to exert a resultant force on a surface of the construction by means of two rods .
  • Such a supporting element is for instance suitable for placing in a corner between two surfaces of the construction. This is particularly attractive when the body comprises at least one second support surface adapted to contact the construction.
  • the supporting element can be placed with both support surfaces in a corner of the construction, wherein the two rods exert a resultant force on the supporting element.
  • a more recommended embodiment is however provided with a third cavity for a third pivot, wherein the device comprises a third pivot which is adapted for coupling to a third rod of the rod assembly.
  • the device comprises a third pivot which is adapted for coupling to a third rod of the rod assembly.
  • a field of application for this embodiment lies for instance in the temporary repair of openings in a ship's side.
  • An opening in a ship's side resulting from for instance a collision or from acts of war has to be sealed quickly in order to prevent flooding of the compartment of the ship situated behind the opening and the associated instability of the ship .
  • Use can herein be made of the invention, for instance to temporarily fix against such an opening a plate which seals the opening.
  • Use can be made for this purpose of a rod assembly which is adapted by means of a number of supporting elements according to the invention to exert a force which extends substantially perpendicularly of the surface of the sealing plate and with which the plate is pressed against the opening.
  • Use can also be made of such supporting elements to support the rod assembly against the other walls or possible structural components of the compartment in question.
  • a further embodiment provides the measure that the body is formed to limit the angular deflection of the pivots to positions in which a stable situation of the rod assembly can be obtained. Potentially unstable, and thus unsafe, situations are hereby avoided.
  • the outer pivots are rotatable between a position in which the axis connected to the relevant pivot extends parallel to the support surface and a position in which the axis extends perpendicularly of the support surface; and between a position in which the axis extends parallel to the connecting line between the centre of the pivots and a position in which the axis extends at a perpendicular angle between the connecting axis and parallel to the support surface; and that the inner pivot is rotatable between a position in which the axis connected to the pivot extends parallel to the support surface and a position in which the axis extends perpendicularly of the support surface; and between two positions extending at an angle of 6 ⁇ D on either side of the central perpendicular plane of the outer pivots .
  • each of the outer pivots can extend within a segment of a sphere, which segment of a sphere corresponds to 1/8 of a sphere.
  • the axis of the central pivot can extend within a segment of a sphere corresponding to about 1/6 of a sphere.
  • the rods are generally used to exert pressure forces. In some situations it is useful to transmit tensile forces.
  • figure 1 is a perspective view of a supporting element according to the present invention
  • figure 2 is a perspective view from another angular position of the supporting element shown in figure 1
  • figure 3 is a schematic view of the angles at which the rods mounted on the supporting element can move
  • figure 4 shows a detail view of figure 3
  • figure 5 is a schematic perspective view of a space in which is placed a rod assembly provided with supporting elements according to the present invention.
  • FIG. 1 shows a supporting element according to the present invention which is designated as a whole with 1.
  • the supporting element comprises a supporting body 2 which is manufactured from for instance cast metal and in which a number of cavities 3, 4 and 5 are arranged, for instance by machining.
  • a Seeger rings Used to fix the pivots 6, 7, 8 in spherical cavities 3, 4, 5 are Seeger rings which are placed in a groove arranged for this purpose.
  • supporting body 2 On its underside the supporting body 2 is provided with a support surface not shown in the drawing.
  • Figure 1 also shows that supporting body 2 is provided with a secondary support surface 26 which is used to support the supporting element on a second side.
  • the ball joints formed by spherical cavities 3, 4, 5 and pivots 6, 7, 8 allow a rotation within certain angles of the coupling elements 9, 10, 11 attached to the pivots.
  • These coupling elements are adapted for coupling to rod elements such as are sold by applicant under the "Powershore” programme. Using these rod elements it is possible to build up structures as shown in figure 4.
  • Figure 4 shows a space 12 which is formed by a base 13, an outer wall 14 and a side wall 15.
  • a structural support 16 is further arranged in the space.
  • outer wall 14 is a ship's hull in which an opening 17 has been made. Opening 17 is sealed by a plate 18, for instance a metal plate, which is pressed into place by a rod assembly.
  • a supporting element 1 according to the present invention is placed for this purpose against plate 18, the coupling 9 of which element is connected to a first rod 17.
  • Rod 17 is connected on its other end to a single supporting element.
  • This prior art supporting element 19 serves as single supporting element.
  • a rod 21 is connected to the second coupling element 10 of the supporting element. This is connected to another prior art single supporting element 22.
  • the third coupling element 11 is connected to a third rod 23 which is connected to a coupling element of a second supporting element according to the present invention, which is designated in figure 4 with 1'.
  • Supporting element 1' corresponds with supporting element 1 and is thus also provided with a first coupling element 9', which is connected to rod 23, and second coupling element 10', which is connected to a rod 24 which extends obliquely upward and the other side of which is connected to a single supporting element 25 according to the prior art.
  • the third coupling element 11' is not connected to a rod. In the configuration in which this supporting element 1' is used this is not necessary, since the supporting element not only rests against side wall 15 with its support surface but also rests on base 12 with its secondary support surface.
  • a hydraulic cylinder is arranged in one of these rods.
  • a pressure can hereby be generated in the thus formed rod assembly, which force can be used to push plate 18 against outer wall 14 and to thereby seal the opening 17 in side wall 15.
  • Figure 3 shows a body 1" which has a rectangular form and which is provided with three points of rotation 31, 32 and 33 situated in a line 30. These points of rotation 31, 32 and 33 represent the points of rotation of the ball joints formed by spherical cavities 3, 4 respectively 5 and pivots 6, 7 respectively 8.
  • the axis of the first ball joint is limited to a segment of a sphere corresponding to 1/8 sphere which is directed to the left, to the rear and upward relative to point 31.
  • the axis of the third ball joint is limited to movements within the direction of the segment of a sphere corresponding to about 1/6 sphere, which extends from point 33 to the rear, to the right and upward.
  • the deflection of the associated axis is limited to a segment of a sphere, the extension of which in the vertical plane is limited to the upper half, and is limited in the horizontal plane by the angle ⁇ .
  • This angle can have a size of for instance 12 ⁇ O.
  • FIGS 1 and 2 of the drawings show how two eyes 27, 28 are fixed to the supporting element. These eyes 27 serve for fastening cables or belts to the supporting element. These cables or belts can also be used to transmit forces which play a part in the play of forces of the rod assembly. It will however be apparent that these cables or belts can only transmit tensile forces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The invention relates to a supporting element for at least one rod of a rod assembly for exerting forces on a construction, wherein the supporting element comprises: - a body which is provided with at least one partially spherical cavity for receiving a pivot and which has at least one support surface which is adapted to contact the construction; - at least one pivot which is connected to a coupling and which is adapted for coupling to the rod, wherein the body is provided with at least one second cavity for a second pivot, and the device comprises a second pivot which is adapted for coupling to a second rod of the rod assembly. It is thus possible with this supporting element to exert a resultant force on a surface of the construction by means of two rods.

Description

MULTIPLE SUPPORTING ELEMENT
The invention relates to a supporting element for at least one rod of a rod assembly for exerting forces on a construction, wherein the supporting element comprises: a body which is provided with at least one partially spherical cavity for receiving a pivot and which has at least one support surface which is adapted to contact the construction, and at least one pivot which is connected to a coupling and which is adapted for coupling to the rod.
Such a supporting element is known from NL-A-9202239. Such a prior art supporting element is only suitable for exerting on a construction a force originating from only one rod. This means in practice that the rod must extend transversely of the surface on which the force must be exerted, or that a combination of different supporting elements must be made in order to be able to work with a plurality of rods, as is usually the case in practice. The assembly of a combination of such supporting elements requires joining together two or more such supporting elements. This involves the danger of relative shifting of the supporting elements, which can cause unstable and therefore hazardous situations. Constructing a ' rod assembly with such separate supporting elements is furthermore difficult; separate supporting elements must often be held fast in positions which are difficult to access before the above stated supporting element is fixed by co- action with other supporting elements of the same group.
The object of the present invention is to provide such a supporting element which does not result in these drawbacks. This object is achieved in that the body is provided with at least one second cavity for a second pivot, and that the device comprises a second pivot which is adapted for coupling to a second rod of the rod assembly.
It is thus possible with this supporting element to exert a resultant force on a surface of the construction by means of two rods .
The number of degrees of freedom is hereby already increased by one relative to the prior art. Such a supporting element is for instance suitable for placing in a corner between two surfaces of the construction. This is particularly attractive when the body comprises at least one second support surface adapted to contact the construction. The supporting element can be placed with both support surfaces in a corner of the construction, wherein the two rods exert a resultant force on the supporting element.
A more recommended embodiment is however provided with a third cavity for a third pivot, wherein the device comprises a third pivot which is adapted for coupling to a third rod of the rod assembly. With this embodiment it is also possible to create a stable situation when supporting on a flat support surface by causing each of the three rods to exert a force, wherein a resultant force is created extending perpendicularly of the support surface. This structural part on which the force is exerted can for instance be a flat plate. It is otherwise possible to combine the two embodiments; a supporting element then results with three ball joints and a first and a second support surface .
A field of application for this embodiment lies for instance in the temporary repair of openings in a ship's side. An opening in a ship's side resulting from for instance a collision or from acts of war has to be sealed quickly in order to prevent flooding of the compartment of the ship situated behind the opening and the associated instability of the ship .
Use can herein be made of the invention, for instance to temporarily fix against such an opening a plate which seals the opening. Use can be made for this purpose of a rod assembly which is adapted by means of a number of supporting elements according to the invention to exert a force which extends substantially perpendicularly of the surface of the sealing plate and with which the plate is pressed against the opening. Use can also be made of such supporting elements to support the rod assembly against the other walls or possible structural components of the compartment in question.
In order to reduce as far as possible a moment resulting from the difference of the points of engagement of the diverse forces on the supporting element, it is attractive when the centre of the three pivots lies in a plane extending perpendicularly relative to the support surface.
A small resulting moment results when the central pivot lies closer to the support surface than the other two pivots. This can be attractive in some situations.
In order to increase the stability of the rod assembly, a further embodiment provides the measure that the body is formed to limit the angular deflection of the pivots to positions in which a stable situation of the rod assembly can be obtained. Potentially unstable, and thus unsafe, situations are hereby avoided.
This is achieved more specifically by the further embodiment which provides the measure that the outer pivots are rotatable between a position in which the axis connected to the relevant pivot extends parallel to the support surface and a position in which the axis extends perpendicularly of the support surface; and between a position in which the axis extends parallel to the connecting line between the centre of the pivots and a position in which the axis extends at a perpendicular angle between the connecting axis and parallel to the support surface; and that the inner pivot is rotatable between a position in which the axis connected to the pivot extends parallel to the support surface and a position in which the axis extends perpendicularly of the support surface; and between two positions extending at an angle of 6θD on either side of the central perpendicular plane of the outer pivots .
These measures achieve that the axis of each of the outer pivots can extend within a segment of a sphere, which segment of a sphere corresponds to 1/8 of a sphere. The axis of the central pivot can extend within a segment of a sphere corresponding to about 1/6 of a sphere. The forces acting on the supporting element avoid an unstable situation of the supporting element.
The rods are generally used to exert pressure forces. In some situations it is useful to transmit tensile forces.
Belts or cables are preferably used for this purpose. Using eyes arranged on the supporting element, such flexible elements can also be safely connected to the supporting element . The present invention will now be elucidated with reference to the annexed drawings, in which: figure 1 is a perspective view of a supporting element according to the present invention; figure 2 is a perspective view from another angular position of the supporting element shown in figure 1; figure 3 is a schematic view of the angles at which the rods mounted on the supporting element can move; figure 4 shows a detail view of figure 3; and figure 5 is a schematic perspective view of a space in which is placed a rod assembly provided with supporting elements according to the present invention.
Figure 1 shows a supporting element according to the present invention which is designated as a whole with 1. The supporting element comprises a supporting body 2 which is manufactured from for instance cast metal and in which a number of cavities 3, 4 and 5 are arranged, for instance by machining. In each of these cavities 3, 4, 5 is arranged a pivot 6, 7, 8, to which is attached a coupling element 9 respectively 10 and 11. Used to fix the pivots 6, 7, 8 in spherical cavities 3, 4, 5 are Seeger rings which are placed in a groove arranged for this purpose.
On its underside the supporting body 2 is provided with a support surface not shown in the drawing. Figure 1 also shows that supporting body 2 is provided with a secondary support surface 26 which is used to support the supporting element on a second side.
The ball joints formed by spherical cavities 3, 4, 5 and pivots 6, 7, 8 allow a rotation within certain angles of the coupling elements 9, 10, 11 attached to the pivots.
These coupling elements are adapted for coupling to rod elements such as are sold by applicant under the "Powershore" programme. Using these rod elements it is possible to build up structures as shown in figure 4.
Figure 4 shows a space 12 which is formed by a base 13, an outer wall 14 and a side wall 15. A structural support 16 is further arranged in the space. It is assumed here that outer wall 14 is a ship's hull in which an opening 17 has been made. Opening 17 is sealed by a plate 18, for instance a metal plate, which is pressed into place by a rod assembly.
A supporting element 1 according to the present invention is placed for this purpose against plate 18, the coupling 9 of which element is connected to a first rod 17. Rod 17 is connected on its other end to a single supporting element. This prior art supporting element 19 serves as single supporting element. A rod 21 is connected to the second coupling element 10 of the supporting element. This is connected to another prior art single supporting element 22.
The third coupling element 11 is connected to a third rod 23 which is connected to a coupling element of a second supporting element according to the present invention, which is designated in figure 4 with 1'.
Supporting element 1' corresponds with supporting element 1 and is thus also provided with a first coupling element 9', which is connected to rod 23, and second coupling element 10', which is connected to a rod 24 which extends obliquely upward and the other side of which is connected to a single supporting element 25 according to the prior art. The third coupling element 11' is not connected to a rod. In the configuration in which this supporting element 1' is used this is not necessary, since the supporting element not only rests against side wall 15 with its support surface but also rests on base 12 with its secondary support surface.
In order to generate a mechanical tension in rods 19, 21, 23 and 24, a hydraulic cylinder is arranged in one of these rods. A pressure can hereby be generated in the thus formed rod assembly, which force can be used to push plate 18 against outer wall 14 and to thereby seal the opening 17 in side wall 15.
It will be apparent that numerous other rod configurations can be used for this purpose. In the supporting element according to the invention it is important that one, two or three rods can be connected as desired. In general, such a supporting element will have to be connected to a rod with all three couplings in order to obtain a stable situation. In situations in which the supporting element is placed in a corner, it is possible to suffice with two rods, as shown in figure 4 for element 1 ' . For purposes of stability it is further of importance that the deflections of the axes of the rods are limited by the design of the supporting element. This limitation is shown schematically in figure 3.
Figure 3 shows a body 1" which has a rectangular form and which is provided with three points of rotation 31, 32 and 33 situated in a line 30. These points of rotation 31, 32 and 33 represent the points of rotation of the ball joints formed by spherical cavities 3, 4 respectively 5 and pivots 6, 7 respectively 8. The axis of the first ball joint is limited to a segment of a sphere corresponding to 1/8 sphere which is directed to the left, to the rear and upward relative to point 31. The axis of the third ball joint is limited to movements within the direction of the segment of a sphere corresponding to about 1/6 sphere, which extends from point 33 to the rear, to the right and upward.
From the central ball joint the deflection of the associated axis is limited to a segment of a sphere, the extension of which in the vertical plane is limited to the upper half, and is limited in the horizontal plane by the angle α. This angle can have a size of for instance 12θO.
In order to implement these limitations, corresponding shapes are arranged in supporting element 1. The limitations of the left sphere segment are formed by edge 34, of the central ball joint by edge 35 and of the right ball joint by edge 36.
It will be apparent that diverse variations can be made in these limitations by means of appropriate design. The consequence of this limitation in directions is that potentially unsafe situations, wherein the rod assembly is not in balance, can be avoided.
Figures 1 and 2 of the drawings show how two eyes 27, 28 are fixed to the supporting element. These eyes 27 serve for fastening cables or belts to the supporting element. These cables or belts can also be used to transmit forces which play a part in the play of forces of the rod assembly. It will however be apparent that these cables or belts can only transmit tensile forces.

Claims

1. Supporting element for at least one rod of a rod assembly for exerting forces on a construction, wherein the supporting element comprises:
- a body which is provided with at least one partially spherical cavity for receiving a pivot and which has at least one support surface which is adapted to contact the construction;
- at least one pivot which is connected to a coupling and which is adapted for coupling to the rod, characterized in that the body is provided with at least one second cavity for a second pivot, and that the device comprises a second pivot which is adapted for coupling to a second rod of the rod assembly.
2. Supporting element as claimed in claim 1, characterized in that the body has at least one second support surface adapted to contact the construction.
3. Supporting element as claimed in claim 1, characterized in that the body is provided with at least one third cavity for a third pivot, and that the device comprises a third pivot which is adapted for coupling to a third rod of the rod assembly.
4. Supporting element as claimed in claim 3, characterized in that the centre of the three pivots lies in a plane extending parallel to the support surface.
5. Supporting element as claimed in claim 4, characterized in that the central pivot is displaced relative to the connecting line between the two outer pivots.
6. Supporting element as claimed in any of the foregoing claims, characterized in that the body is formed to limit the angular deflection of the pivots to positions in which a stable situation can be obtained.
7. Supporting element as claimed in claim 6, characterized in that
- the outer pivots are rotatable
- - between a position in which the axis -connected to the pivot extends parallel to the support surface and a position in which the axis extends perpendicularly of the support surface; and
- - between a position in which the axis extends parallel to the connecting line between the centre of the pivots and a position in which the axis extends at a perpendicular angle between the connecting axis and parallel to the support surface; and
- the inner pivot is rotatable
- - between a position in which the axis connected to the pivot extends parallel to the support surface and a position in which the axis extends perpendicularly of the support surface; and
- - between two positions extending at an angle of 6θD on either side of the central perpendicular plane of the outer pivots .
8. Supporting element as claimed in any of the foregoing claims, characterized in that the supporting element comprises at least two eyes .
EP04719158A 2003-04-07 2004-03-10 Multiple supporting element Withdrawn EP1611300A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1023116A NL1023116C2 (en) 2003-04-07 2003-04-07 Multiple support element.
PCT/NL2004/000175 WO2004090260A1 (en) 2003-04-07 2004-03-10 Multiple supporting element

Publications (1)

Publication Number Publication Date
EP1611300A1 true EP1611300A1 (en) 2006-01-04

Family

ID=33157431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04719158A Withdrawn EP1611300A1 (en) 2003-04-07 2004-03-10 Multiple supporting element

Country Status (3)

Country Link
EP (1) EP1611300A1 (en)
NL (1) NL1023116C2 (en)
WO (1) WO2004090260A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7806381B2 (en) 2007-08-21 2010-10-05 Hale Products, Inc. Stabilization and support strut with secure deployment features

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3171627A (en) * 1962-04-19 1965-03-02 Union Metal Products Inc Extensible shoring device
US4787781A (en) * 1987-05-14 1988-11-29 Walter Lipscomb Shoring device
IT225795Y1 (en) * 1991-12-24 1997-01-24 Idros Srl WIDE ANGLE ADJUSTABLE HEAD MODEL

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004090260A1 *

Also Published As

Publication number Publication date
WO2004090260A1 (en) 2004-10-21
NL1023116C2 (en) 2004-10-08

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