EP3081722A1 - In holzmast angeordnete vorrichtung zur verringerung der mastbiegung - Google Patents

In holzmast angeordnete vorrichtung zur verringerung der mastbiegung Download PDF

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Publication number
EP3081722A1
EP3081722A1 EP16165480.1A EP16165480A EP3081722A1 EP 3081722 A1 EP3081722 A1 EP 3081722A1 EP 16165480 A EP16165480 A EP 16165480A EP 3081722 A1 EP3081722 A1 EP 3081722A1
Authority
EP
European Patent Office
Prior art keywords
arm portion
wooden pole
fixing point
pole
wooden
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.)
Granted
Application number
EP16165480.1A
Other languages
English (en)
French (fr)
Other versions
EP3081722B1 (de
Inventor
Esa Pesari
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.)
Tehomet Oy
Original Assignee
Tehomet Oy
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 Tehomet Oy filed Critical Tehomet Oy
Publication of EP3081722A1 publication Critical patent/EP3081722A1/de
Application granted granted Critical
Publication of EP3081722B1 publication Critical patent/EP3081722B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E04H12/2292—Holders used for protection, repair or reinforcement of the post or pole

Definitions

  • the invention relates to an apparatus arranged in a wooden pole for reducing the deflection of the wooden pole when said wooden pole is subjected to a lateral tensile load affecting at a particular height.
  • guy ropes which are used to support wooden poles under lateral forces and which are installed between the top part of a wooden pole and a suitable fixing point usually built in the ground so that the guy rope prevents the wooden pole from deflecting in the direction of the pulling lateral load.
  • Such guy ropes are awkward almost everywhere, such as in built-up areas, fields, and even forests, in particular because they are usually located transversely in relation to a power line, for example, spanning along the wooden poles.
  • the deflection of a wooden pole, caused by a lateral load may substantially be reduced by largely transferring the stress moment increasing towards the bottom part in conventional prior art poles into tensile and compression load.
  • the apparatus according to the invention is characterised in that the apparatus includes a coupling element receiving said lateral tensile load, a mechanism which is connected to said coupling element and which, on its first arm portion, has a fixing point arranged with the chance to move in the direction of the tensile load, and a fixing point on a second arm portion is arranged with the chance to move in the vertical direction, whereby said arm portions are interconnected to move together by turning around a common axle, and in that the second arm portion is coupled by its fixing point to a counterpart in a base part of said wooden pole by means of a tensile member running within said wooden pole.
  • An advantage of the invention is that a wooden pole will deflect less than prior art wooden poles by means of the apparatus according to the invention when lateral load is present.
  • wooden poles may be used without guys as originating of terminating poles of, for example, overhead cables, without unaesthetic deflection being caused in them.
  • Figures 1 and 2 both show a wooden pole positioned on a sturdy base. The bases remain stationary, even if a force F loads the wooden poles in the lateral direction.
  • the wooden pole in Figure 1 has a conventional structure and it deflects due to the load when stretch is created in said pole on the outer edge of the deflection arc.
  • the wooden pole of Figure 2 has the apparatus according to the invention installed in it, which receives the tensile stress on behalf of the wooden structure through a tensile member 8 and thus reduces the deflection of the wooden pole to almost unnoticeable.
  • Figure 3 shows in greater detail a way to fix the tensile member 8 to the bottom part of a wooden pole to a metal baseplate by means of a counterpart 9, the tensile member 8 pulling the plate upward by a force Fy.
  • the same baseplate also receives a downward force Fa from the right-hand side portion of the wooden pole 1.
  • the mechanism according to the invention capable of turning around an axle 7, transfers the force pulling on the coupling element 2 into force Fy pulling on the tensile member 8.
  • the force is converted inversely proportional to the length of first 3 and second arm portion 5. Loading force from the mechanism transfers through the axle 7 to the right edge of the wooden pole into force Fa. Because wood can withstand compression force well, the right edge of the wooden pole will not give in even with considerable force Fa.
  • the compression of the wood or the stretching of the tensile member 8 has no importance in this case, because said compression or stretching does not reduce the force causing them.
  • Figure 4 shows a wooden pole installed in a metal base 10. At the end of the tensile member 8 there is a nut that may be used to adjust the length of the tensile member 8.
  • the wooden pole 1 is supported by a flange 11 in the top part of the base 10. The lower end of the tensile member 8 may be connected to said flange.
  • the fixing points 4, 6 of the first 3 and second arm portion 5 are substantially at a 90° angle with respect to each other in relation to the common axle 7.
  • the common axle 7 included in the mechanism is arranged outside of the wooden pole 1 or substantially on the edge part of the pole 1.
  • the fixing point 4 belonging to the first arm portion 3 is located at least as far from the common axle 7 as the fixing point 6 of the second arm portion 5.
  • the distance of the fixing point 4 belonging to the first arm portion 3 from the common axle 7 is at least twice the distance of the fixing point 6 of the second arm portion 5.
  • first 3 and the second arm portion 5 are of the same structure.
  • the first arm portion 3 in the mechanism is longer than the second arm portion 5. It is advantageously at least twofold in relation to the second arm portion 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP16165480.1A 2015-04-16 2016-04-15 In holzmast angeordnete vorrichtung zur verringerung der mastbiegung Not-in-force EP3081722B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FIU20150059U FI11035U1 (fi) 2015-04-16 2015-04-16 Puupylvääseen sovitettu laitteisto pylvään taipuman pienentämiseksi

Publications (2)

Publication Number Publication Date
EP3081722A1 true EP3081722A1 (de) 2016-10-19
EP3081722B1 EP3081722B1 (de) 2017-09-13

Family

ID=54840303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16165480.1A Not-in-force EP3081722B1 (de) 2015-04-16 2016-04-15 In holzmast angeordnete vorrichtung zur verringerung der mastbiegung

Country Status (2)

Country Link
EP (1) EP3081722B1 (de)
FI (1) FI11035U1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934675A (en) * 1989-04-24 1990-06-19 Klocke Gary J Apparatus for temporarily repairing utility poles or the like
DE202005001759U1 (de) * 2005-02-04 2005-08-18 Habrichs, Johannes Vorrichtung zur nachträglichen Stabilisierung stehend verankerter Masten aus Hohlprofilen
US20050210821A1 (en) * 2004-03-26 2005-09-29 Bingel Nelson G Iii Pole reinforcement truss
DE102009005735A1 (de) * 2009-01-22 2010-07-29 HMH Prüftechnik GmbH Vorrichtung zur Stabilisierung stehend verankerter Masten aus Hohlprofilen durch Trapez-Profile von innen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4934675A (en) * 1989-04-24 1990-06-19 Klocke Gary J Apparatus for temporarily repairing utility poles or the like
US20050210821A1 (en) * 2004-03-26 2005-09-29 Bingel Nelson G Iii Pole reinforcement truss
DE202005001759U1 (de) * 2005-02-04 2005-08-18 Habrichs, Johannes Vorrichtung zur nachträglichen Stabilisierung stehend verankerter Masten aus Hohlprofilen
DE102009005735A1 (de) * 2009-01-22 2010-07-29 HMH Prüftechnik GmbH Vorrichtung zur Stabilisierung stehend verankerter Masten aus Hohlprofilen durch Trapez-Profile von innen

Also Published As

Publication number Publication date
EP3081722B1 (de) 2017-09-13
FI11035U1 (fi) 2015-11-18

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