EP4581223A1 - Kit de pièces pour serrage de poteau - Google Patents

Kit de pièces pour serrage de poteau

Info

Publication number
EP4581223A1
EP4581223A1 EP23764294.7A EP23764294A EP4581223A1 EP 4581223 A1 EP4581223 A1 EP 4581223A1 EP 23764294 A EP23764294 A EP 23764294A EP 4581223 A1 EP4581223 A1 EP 4581223A1
Authority
EP
European Patent Office
Prior art keywords
extension member
clamping
socket
pole
bolt
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.)
Pending
Application number
EP23764294.7A
Other languages
German (de)
English (en)
Inventor
Frank Gogarty
Stephen MCGEOUGH
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.)
Nal Products Ltd
Original Assignee
Nal Products 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 Nal Products Ltd filed Critical Nal Products Ltd
Publication of EP4581223A1 publication Critical patent/EP4581223A1/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2253—Mounting poles or posts to the holder
    • E04H12/2269—Mounting poles or posts to the holder in a socket
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2207—Sockets or holders for poles or posts not used
    • E04H12/2215—Sockets or holders for poles or posts not used driven into the ground

Definitions

  • This invention relates to devices, systems and kits of parts for supporting poles such as road traffic signs, lighting columns etc., and has particular application in supporting poles through use of a clamping device which connects a longitudinal stabilisation extension member to a socket which retains the pole.
  • a clamping device which connects a longitudinal stabilisation extension member to a socket which retains the pole.
  • a kit comprising a ground engaging socket with an upper clamping section and preferably a base member with a lower clamping section, with an extension member being clamped to the ground engaging socket and, if present, the base member.
  • a device for supporting a pole typically comprises a ground engaging socket housing for mounting in the ground, having a proximal end with an opening for receiving one end of the pole such that the opening is more or less flush with the surface of the ground and having a distal end with an opening for receiving a proximal end of an extension member in order to generate a required installation depth.
  • a base member engages with a distal end of the extension member.
  • an extension member ensures that the socket is supported and lends extra strength to the system.
  • the interface between the socket and the extension member is thus critical as is represents a potential area for misalignment during installation and stress concentration during vehicular impact.
  • the base member assists in locating and supporting the base of the inserted pole and, in use, is fully submerged below the ground.
  • the base member may incorporate additional features which support a drainage function, cable routing etc.
  • the extension member is typically a tubular member which is fabricated from steel or plastic.
  • the extension member and the socket are connected together with flanges or material specific connectors or welded together.
  • the ground engaging socket (hereafter referred to as socket) is metal, however, the extension member could be metal or plastic.
  • a metal to plastic interface can be particularly technically complex due to a difference in material strength between the two materials and other divergent material properties such as sensitivity to heat etc.
  • Poles are designated for a service life of several years. This service life is based on the assumption that the pole is undamaged, and that the installation design is unchanged throughout the life of the device.
  • Patent Application W02007135119 discloses a retention system for a pole comprising a socket, a ribbed extension unit and a base unit.
  • the extension unit is made from a relatively weak material and the extension unit cannot withstand the potential force to which is it exposed, so an additional structural reinforcement is required (which is provided by means of a series of bars which are positioned around the exterior of the extension unit).
  • the socket itself is provided in two halves, known as a split casing. Split casing causes many issues in terms of alignment of casts, time to assemble, weight of socket and generation of areas of stress concentration.
  • a system for supporting and clamping a pole comprising; a ground engaging socket having means to clamp a pole in position and having a proximal end for location at ground level and a distal end for location beneath ground level comprising a flange with an inner recess, an extension member and a clamping device comprising at least two clamping mechanisms, each clamping mechanism comprising a member for interaction with a ribbed exterior of a proximal end of the extension member; wherein a portion of the proximal end of the extension member is aligned with and projected into the inner recess of the socket when the clamping device interacts with the extension member.
  • kit of parts comprising a clamping device, an extension member, a ground engaging socket having a proximal end for location at ground level and a distal end for location beneath the ground, wherein the distal end comprises a flange and wherein the clamping device comprises at least two clamping mechanisms, each clamping mechanism comprising a member for interaction with a ribbed exterior of a proximal end of the extension member such that, in use, the clamping device aligns and clamps the socket and extension member together in a configuration whereby a portion of the proximal end of the extension member is accommodated within an inner recess of the socket, the inner recess being located within the flange.
  • system or kit may also comprise a base member for location at a distal end of the extension member, such that, in use, the distal end of the extension member is connected to the base member.
  • Figure 4 is a magnified view of an area circled in Figure 3, which illustrates the interface between the socket, the extension member and the clamping device of the present invention
  • Figure 5a is a side elevation view of the first embodiment of the present invention.
  • Figure 10 is a cross sectional view of a clamping bolt, nut and pressure distribution bolt cap in use according to the present invention
  • Figure 11a is a side elevation view of a half shell of an alternative first embodiment of the present invention comprising a plurality of hinged segments
  • Figure 11 b is a cross sectional elevation view (along line BB in Figure 11a) which illustrates a plurality of connected segments;
  • Figure 11c is a cross sectional elevation view (along line CC in Figure 11a) which illustrates a plurality of connected segments in use to form a ring like structure;
  • Figure 12a is a side elevation view of a half shell of an alternative first embodiment of the present invention comprising a hinge and a bolt in use;
  • Figure 12c is a cross sectional elevation view (along line CC in Figure 12a) which illustrates two half shells connected in use through a bolt and a hinge, to form a ring like structure;
  • Figure 13 is a perspective view of a socket, extension member and clamping device according to a second embodiment of the present invention, wherein several independent clamping mechanisms are provided;
  • Figure 15 is a cross sectional elevation view of a socket, extension member and clamping device according to a second embodiment of the present invention.
  • Figure 16a is a magnified view of an area circled in Figure 15 and which illustrates the interface between the socket, extension member and the clamping device according to a second embodiment of the present invention
  • Figure 16b is an exploded view of the items of Figure 16a;
  • Figure 17 is a perspective view of part of a clamping device of the second embodiment of the present invention
  • Figure 18a is a plan view of part of the clamping device of the second embodiment of the present invention
  • Figure 18b is a side elevation view of the part of the clamping device of Figure 18a;
  • Figure 18c is a plan view of a part of the clamping device of Figure 18a wherein a bolt has been included;
  • Figure 18d is a cross sectional elevation view of part of the clamping device which is shown in Figure 18a;
  • Figure 19 is a perspective view of an embodiment according to the present invention where a clamping device is in use between a socket and a proximal end of an extension member and again between a base member and a distal end of the extension member.
  • a distal end 17 of the extension member 4 is held in secure contact with the base member 7.
  • the socket 2 is a one-piece casting made of ductile iron.
  • the kit 100 comprises; a clamping device 1 , an extension member 4, and a socket 2.
  • the extension member 4 is typically a rigid double walled plastic pipe (also known by the skilled person as a twin walled tube, a double walled pipe or a double walled tube).
  • the standard design and manufacturing process of the plastic pipe means that the plastic pipe is ribbed (wherein the outer surface of the plastic pipe comprises parallel circular upstanding bands or ribs 6 which are equally spaced apart). These ribs 6 may also be known as corrugations and the pipe may be known as a corrugated pipe.
  • the ribs 6 define a peak 8 and trough 10 style of geometry on the outside of the plastic pipe as shown in Figures 3, 4, 6, 7, 13, 14, 15, 16a 16b and 19.
  • At least one clamping bolt 32 and at least one corresponding pressure distribution bolt cap 34 are also provided.
  • a proximal end of the socket 2 comprises a pole receiving chamber into which a pole can be received.
  • the at least one clamping bolt 32 comprises a head and a shaft carrying a threaded section.
  • the at least one clamping bolt 32 is actuated to advance the distal end of the clamping bolt 32 through a hole 36 in the socket 36 towards the pole and into the pole receiving chamber.
  • At least one clamping bolt 32 with a corresponding pressure distribution bolt cap 34 is used to support the pole in the pole receiving chamber.
  • Preferably at least two clamping bolts 32 with corresponding pressure distribution bolt caps 34 are used to support the pole in the pole receiving chamber.
  • Each clamping bolt 32 is threaded and provided with a corresponding nut 30.
  • the nut 30 is received in a hexagonal hole so that rotation of the nut 30 is prevented.
  • the pressure distribution bolt cap 34 is mounted on the distal end of the clamping bolt and is freely rotatable with respect to the clamping bolt 32.
  • the pressure distribution bolt cap 34 is in the form of a cylindrical or hexagonal cup with a cylindrical sidewall projecting from a base wall, wherein the cylindrical sidewall defines an internal space into which the distal end of the clamping bolt 32 is received, and wherein the base wall has a flat or contoured external surface which provides an outer terminal contact surface for contacting the pole.
  • pressure distribution bolt cap 34 outer terminal contact surface shapes may be round, hexagonal or otherwise without departing from the inventive concept of the invention.
  • the area of an outer terminal contact surface of the pressure distribution bolt cap 34 is greater than the area of the distal end surface of the clamping bolt 32.
  • the pressure distribution bolt cap 34 distributes the high pressure generated by the clamping bolt 32 when it has been activated to clamp a pole within the pole receiving chamber.
  • the pressure distribution bolt cap 34 protects the pole by providing a flat and stationary surface for interaction with the pole when the pole is clamped in place by the clamping bolt 32. This design allows high force clamping without damage to the pole, the clamping bolt 32 or the pressure distribution bolt cap 34, allowing repeat use of the pole housing throughout the life of the pole without the need of a protective sleeve or insert.
  • Each pressure distribution bolt cap 34 is fixed onto the distal end of the clamping bolt 32 by a locating means comprising complementary interference fit geometries on the clamping bolt 32 and the pressure distribution bolt cap 34 such that the distal end of the clamping bolt 32 is engaged with the pressure distribution bolt cap 34, and in particular such that a circular groove on the inner surface of a cylindrical sidewall of the pressure distribution bolt cap 34 also is engaged with a complementary recessed groove on the surface of the distal end of the clamping bolt 32.
  • the pressure distribution bolt cap 34 is held in position by a locating means 40 on the pressure distribution bolt cap 34 and a complementary locating means 42 on the clamping bolt 32 so that rotation of the pressure distribution bolt cap 34 relative to the clamping bolt 32 is permitted.
  • the two locating means 40, 42 are sized so that they effect an interference fit with each other.
  • the interference fit shall be such that the pressure distribution bolt cap 34 can be pressed onto the clamping bolt 32 with modest force.
  • the pressure distribution bolt cap 34 shall be removable from the clamping bolt 32 with modest force by unscrewing the clamping bolt 32.
  • a modest force shall be considered to be a force within the range of 5-20Nm torque.
  • the pressure distribution bolt cap 34 protects the pole and any coating on the pole, it is no longer necessary to insert a protective sleeve between the pole and the clamping bolt.
  • the pressure distribution bolt cap 34 also transmits very high clamping pressure thus keeping the pole in place, whilst still protecting the pole (or the pole coating, if a coating is present) from damage.
  • the pressure distribution bolt cap 34 also supports the end of the clamping bolt 32 within the socket 2 in such a way that damaging forces applied to the clamping bolt 32 during vehicular impact and torsion due to wind loads are eliminated. This is achieved by the distal end of the clamping bolt 32 being constrained against lateral movement by merit of its position, in use, within the pressure distribution bolt cap 34.
  • the pressure distribution bolt cap 34 is in turn constrained in a hexagonal hole in the socket 2 which also houses a nut 30 wherein the pressure distribution bolt cap 34 fits into the hexagonal hole but remains free to rotate.
  • the shape of the pressure distribution bolt cap 34 allows the pressure distribution bolt cap 34 to be used as a ‘guide’ for the clamping bolt 32 when the clamping bolt 32 is located in and moves along a guide channel in the socket 2.
  • the extension member 4 is typically a metal pipe which can be connected directly to the socket 2 using readily available material specific connectors, as the socket 2 is also made of metal.
  • the socket 2 comprises, at its distal end 5, an opening 11 for receiving the proximal end 15 of the extension member 4.
  • the opening 11 on the distal end 5 of the socket 4 comprises a flange or a lip 12 such that the clamping device 1 can be clamped over the lip 12.
  • the lip 12 comprises a longitudinal part 14 which comprises an inner recess 16.
  • the inner recess 16 has a depth of at least 95% the length of one trough 10.
  • the inner recess 16 has a depth which is 110% the length of the trough 10 of the extension member 4, such that, in use, the proximal end 15 of the extension member 4 sits within the inner recess 16 of the socket 2.
  • the clamping device 1 comprises at least two clamping mechanisms. As shown in Figures 5a, 5b, 5c and 5d, in a first embodiment the clamping device 1 comprises two half shells which can be bolted or hinged, or bolted and hinged, together about both the distal end 5 of the socket 2 and the proximal end 15 of the extension member 4 concurrently. The outermost circumferential edges of each of the half shell extends out to form an elongated ridge 24. In use, one elongated ridge 24 sits over the flange or lip 12 of the socket 2 and the other elongated ridge 24 sits inside a trough 10 of the extension member 4 such that the adjacent peak 8 of the extension member 4 is trapped inside the half shell.
  • the tapered inner surfaces 9 of the elongated ridges 24 of the half shells provide an axial clamping force in a wedge like action.
  • both the proximal end 15 of the extension member 4 and the distal end 5 of the socket 2 are trapped within the half shells.
  • the sides of the ribs 6 of the extension member 4 comprises tapered sections.
  • both the sides of the ribs 6 of the extension member 4 and the inner surfaces 9 of the elongated ridges 24 of the clamping mechanisms comprise tapered sections.
  • the clamping device 1 of the second embodiment of the invention comprises at least two, most preferably three, clamping mechanisms, wherein each clamping mechanism is a clamping unit.
  • Each clamping unit has a curved inner surface 28 with an angle of curvature which corresponds to a portion of the angle of curvature of the outside of the extension member 4.
  • the clamping unit comprises a wall section with a bolt hole 20 and an elongated ridge 24 which protrudes directly from the curved inner surface 28 of the wall section.
  • the tightening action of the bolt 18 and nut 22 presses the flange 12 and adjacent rib 6 of the proximal end 15 of the extension member 4 towards each other until a side of the adjacent rib 6 is in contact with the socket 2.
  • the cut line of the proximal end 15 of the extension member 4 does not affect the use of the clamping device 1 as the proximal end 15 of the extension member 4 through which a cut is made fits inside an inner recess 16 of the socket 2.
  • the ribs 6 are consistent throughout the extension member 4 in terms of size and spacing and thus the cut line does not need to be consistent provided that the cut is limited to one trough 10.
  • the distal end 17 of the extension member 4 is located and engaged with the base member 7 using a simple male-female connection.
  • the base member 7 comprises internal ribs which correlate to the external ribs of the extension member 4.
  • the base member 7 is typically formed from two parts which are bolted together about the distal end 17 of the extension member 4. The joint between the extension member 4 and the base member 7 does not need to be precisely aligned or extremely rigid and a certain amount of relative movement between the extension member 4 and the base section 7 is possible without affecting the overall performance of the kit 100.
  • an adapted base member 7 (comprising a flange 12, longitudinal part 14 of flange 12, inner recess 16 of flange etc. or a flange comprising bolt holes 12) may be connected to the extension member 4 through use of a second clamping device 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention a trait à un kit de pièces (100) pour supporter et serrer un poteau comprenant un dispositif de serrage (1), un élément d'extension (4) et une douille de mise en prise avec le sol (2), la douille de mise en prise avec le sol (2) ayant des moyens pour serrer un poteau en position et ayant une extrémité proximale (3) pour un emplacement au niveau du sol et une extrémité distale (5) pour un emplacement sous le sol, le dispositif de serrage (1) comprenant au moins deux mécanismes de serrage, qui, lors de l'utilisation, alignent et serrent la douille (2) et l'élément d'extension (4) ensemble dans une configuration dans laquelle une partie de l'extrémité proximale (15) de l'élément d'extension (4) est logée à l'intérieur de la douille (2).
EP23764294.7A 2022-08-30 2023-08-30 Kit de pièces pour serrage de poteau Pending EP4581223A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP22192965 2022-08-30
EP22201959 2022-10-17
PCT/EP2023/073784 WO2024047105A1 (fr) 2022-08-30 2023-08-30 Kit de pièces pour serrage de poteau

Publications (1)

Publication Number Publication Date
EP4581223A1 true EP4581223A1 (fr) 2025-07-09

Family

ID=87889602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23764294.7A Pending EP4581223A1 (fr) 2022-08-30 2023-08-30 Kit de pièces pour serrage de poteau

Country Status (3)

Country Link
EP (1) EP4581223A1 (fr)
AU (1) AU2023332031A1 (fr)
WO (1) WO2024047105A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE65270B1 (en) * 1991-03-14 1995-10-18 Square Systems Ltd Device for supporting a pole
DE19936694C1 (de) * 1999-08-04 2000-11-30 Straeb Gmbh & Co Geb Einstampfbares Bodenfundament zum Befestigen von Pfosten im Erdreich
WO2007135119A1 (fr) 2006-05-22 2007-11-29 Square Systems Limited Dispositif de support de pylône
GB2534354A (en) * 2015-01-08 2016-07-27 Savage Peter Ltd Support

Also Published As

Publication number Publication date
AU2023332031A1 (en) 2025-04-03
WO2024047105A1 (fr) 2024-03-07

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