DE1434559A1 - Fastening a concrete traverse on a concrete pole - Google Patents

Description

DR. WETZEL © Nuremberg, h. Dec 1962

PATCKlTA M U / A IT HEFNERSPLATZ 3 15/2

PATENT ADVOCATE PO Box 9347 BANK ACCOUNTS: A Λ Ο Λ CCQ DEUTSCHE BANK A. G, FHJALE NUREMBERG NO. 8932 I t O * t O O vJ

AND STADTSPARKASSE NÜRNBERG NO. 30940 POST CHECK: NUREMBERG NO. 3854

TELEPHONE: 28881.28883 I | l-_ ~ V ~ * 1 I.

telegram address: patwetzel II JfT JM "" --- ■■ - I

ELEXj PATWETZEL NBG NO. 06/22397 I ■■ - ■ "-L · _Ä ...; .. ..... _{T #} 1

Beton-Schleuderwerke A.G-., Erlangen

Fastening a concrete traverse on a concrete pole

The invention relates to concrete poles, preferably for electrical overhead lines, and relates in particular to the fastening of a concrete crossbeam on a concrete pole, whereby the mast extends through a sleeve mounted in the crossbeam.

It is known that in such concrete pylons the trusses carrying the overhead lines with their sleeves on the To push up the concrete mast and to concretize it in this pushed-up position. However, this procedure is very time-consuming, as the traverse must first be aligned very carefully on the mast, between the concrete traverse and the Hast a casting joint of constant size · over the entire circumference Truss sleeve must be guaranteed. After the grouting joint has been aligned, it is then sealed on both sides and a liquid cement mortar mixture is poured into the grouting joint via appropriately provided casting openings

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introduced. Wake up to the grouting of the "connecting joint" the cement mortar mixture will set for up to several days, requiring the mast and truss to hold in the adjusted position to each other. Only then can the concrete mast, which is provided with a traverse be set up. Apart from the large amount of time required, this known method is implemented in Frost can only be carried out with anti-freeze agents, which are cumbersome and costly to use is"

Attempts have been made to address the disadvantage of this known fastening method to remedy this, that the concrete traverse is attached to the concrete mast by gluing. In this process, when the mast is in place, the connection surface on the mast side and the crossbeam side are provided with an air-hardening adhesive and then the traverse is pushed over the concrete mast. By using fast-curing adhesives, it is possible erecting the mast after a short time »Nevertheless, the handouts required before the Traverse on the mast still requires a considerable amount of work and material costs known methods with traversed masts still "-being grounded in a known way ·

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BATH

The attachment according to the invention, however, is based on this from the fact that the concrete traverse on the concrete mast without the aid of a binding or adhesive intermediate layer, which must be applied at the installation site is pushed onto the concrete pole. Both the Both the concrete mast and the concrete traverse reflect the delivery condition from the factory. The invention is through a self-locking frictional connection counteracting a tensile force in the direction of the course of the overhead line on the traverse marked between traverse and box, where the connecting surface between the mast and the traverse is designed as a cone that opens on the earth side. Besides the advantage such a particularly simple installation Trusses placed on concrete masts have the properties of so-called swivel trusses, which when a, For example, one-sided tensile force caused by a line break in the direction of the overhead line at the suspension points of the overhead lines transmission of torsional moments to the 3-ton mast is largely independent avoid. This is done by means of a torque corresponding to the torque occurring on the connection surface Slight pivoting movement of the traverse around the axis of the Uast, which is inhibited as soon as it progresses Pivot movement less, on the connection surface acting torque the friction between the mast and the traverse

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no longer overcomes. For this it is only necessary that for the frictional connection between the crossbeam ·. and the mast is guaranteed to have a certain coefficient of static or sliding friction within a narrow tolerance range.

According to the invention, the connecting surface lies between one on the mast circumference and a sleeve embedded within the truss sleeve, these sleeves consisting of a Material with a high coefficient of static friction are manufactured * As these sleeves are manufactured with a constant Surface quality on the side forming the connecting surface and with consistent material properties does not cause any difficulties, is a constant coefficient of adhesion and sliding friction in a narrow tolerance range guaranteed at all times. So it is only necessary at the installation site to open the traverse with its sleeve to push on the sleeve attached to the circumference of the box ", According to the invention, the sleeves are made of a plastic, which preferably has a high dielectric strength. In contrast to the already known method of fastening concrete trusses to concrete masts, earthing the masts is unnecessary, whereby in turn, considerable costs are saved. Ina special is used as 7 / material for the sleeves Testodur a dielectric strength of at least 790 KV / cm is used,

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BATH ORIGINAL

Of course, it is also possible to use a sleeve only within the crossbar sleeve or only on the circumference of the mast, whereby advantages similar to those of the fastening according to the invention can be obtained.

The subject matter of the invention is described in more detail using an exemplary embodiment. Show it :

Figure 1 shows the attachment of the concrete traverse on the concrete mast according to the invention in section,

Figure 2 shows a particular embodiment corresponding to the attachment of Figure 1,

Figure 3 is a plan view of the concrete crossbeam attached to the concrete pole according to Figure 2

A sleeve 2 which is open on the inside is embedded in the traverse 1. Likewise, on the outer circumference 3 of the mast 4 a sleeve 5 firmly attached. The sleeves 2.5 are made of a material with a high coefficient of static and sliding friction manufactured. The connecting surface 6 through the outer surface of the sleeve 5 or on this outer surface lying inner surface of the sleeve 2 is formed, is designed as a cone that opens on the earth side. The attachment the traverse 1 on the box 3 happens from the distant ground On the side of the mast 3 by sliding the sleeve 2 assigned to it onto the sleeve 5 »by its own weight the traverse 1 is a sufficient contact pressure

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between the sleeve 2 and the sleeve 5 ensures that in combination with the high static and G-line friction coefficient of the sleeve material a self-locking frictional connection between traverse 1 and mast 5 guaranteed

To ensure that the sleeves 2 or · 5-in
To ensure area of the connecting surface 6 to each other, the outer diameter of the sleeve 5 firmly anchored in the mast must be larger than the diameter of the mast 4 in the region of the sleeve 5 «Likewise, the inner diameter of the sleeve 2 anchored in the traverse 1 must be small over its entire length - Be smaller than the inner diameter of the traverse sleeve surrounding the sleeve 2.

It is of course also possible, through the attachment according to the invention, several traverses in known One above the other on the mast. Here have the connecting surface η for the traverses closer to the earth a larger diameter than the connecting surfaces for the more distant »

The sleeves 2.5 are made of a plastic, which preferably has a high dielectric strength. In particular, Testodur 2.5 with dielectric strength is used as the material for the sleeves
of at least 790 KV / cm used.

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In a special embodiment of the attachment

according to the invention is on the outer periphery 3 of the Mast 4 anchored sleeve 5 hat-shaped 7 closed over the end face 8 of the mast 4 remote from the earth. This kind the formation of a sleeve 5 comes naturally only possible for the sleeve 5 attached to the upper end of the mast. This embodiment of the sleeve 5 enables penetration prevents water and moisture from entering the interior of the concrete mast, creating a risk of rollover between the traverse 1 and the concrete mast 4 is not given. Of course, you can extend the creepage distances for a rollover between the traverse 1 and the mast 4, preferably the one assigned to the load 4 The sleeve 5 protrudes in the axial direction from the end faces 9, 10 of the sleeve 2 assigned to the traverse 1.

The attachment according to the invention can in the same

Way for attaching a TraTerse to a L'ast are used that are made of a different material are made as essentially concrete.

ORIG | _NAL 9098U / 0027

Claims (1)

f) Patent claims: 1. I fastening of a concrete traverse on a concrete pole, preferably for electrical overhead lines, with the mast reaching through a sleeve fitted in the "crossbeam," characterized by a tensile force in the direction of the overhead line on the traverse counteracting self-locking frictional connection between Traverse (1) and mast (4). 2. Fastening according to claim 1, characterized by a conical design of the connecting surface (6) between the mast (4) and the traverse (1), the cone being on the earth side opens, 3. Attachment according to claim 1 and 2, characterized in that the connecting surface (6) between a (5) on the mast circumference (3) and a (2) within the traverse (1) embedded sleeve, the sleeves (2.5) made of a material with a high coefficient of static and sliding friction are made. 4. Attachment according to one or more of the preceding Claims, characterized in that the traverse (1) with the sleeve (2) assigned to it is pushed onto the sleeve (5) attached to the circumference of the mast. 909844/002 7 5β Attachment according to one or more of the preceding Claims, characterized in that the outer diameter of the sleeve (5) firmly anchored in the mast (4) is larger than the outer diameter of the mast (4) in the area of the sleeve (5) 6. Fastening according to one or more of the preceding claims, characterized in that the inner diameter the sleeve (2) anchored within the traverse (1) is smaller than the inner diameter over its entire length the traverse sleeve surrounding the sleeve (2) " 7. Fastening according to one or more of the preceding claims, characterized in that when arranged several traverses (1) on a hurry (4) the connecting surfaces (6) for the traverses closer to the earth a larger one Have a diameter than the connecting surfaces (6) for the more distant ones. 8. Fastening according to one or more of the preceding claims, characterized in that the sleeves (2.5) are made of plastic. 9. Fastening according to claim 8, characterized in that the plastic has a high electrical dielectric strength having. 90984A / 0027 - ίο - 10 «Fastening according to claim 9, characterized in that the plastic used is Testodur with a dielectric strength of at least 790 KV / cm. _E 11. Attachment according to one or more of the preceding Claims, characterized in that -the upper sleeve (5) on the mast (4) above the end face remote from the earth (8) of the mast (4) hat-shaped (7) is closed. - - SAD §098-44 / 0027-