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Plastic screw plug for attaching a rail to a sleeper

A technology of screw pins and sleepers, applied in the field of plastic screw pins, can solve the problems of weakening and destruction of plastic pins, and achieve the effect of optimizing the thread geometry

Active Publication Date: 2013-04-10
SCHWIHAG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cutting of new threads by the sleeper bolts into the plastic pin does not take place except for the preset thread travel of the sharp thread, which leads to a considerable weakening of the plastic pin and to its destruction over a long period of time

Method used

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  • Plastic screw plug for attaching a rail to a sleeper
  • Plastic screw plug for attaching a rail to a sleeper
  • Plastic screw plug for attaching a rail to a sleeper

Examples

Experimental program
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Embodiment Construction

[0030]1 and 2 show a common rail fastening system, in which the basic rail (Backenschiene) 2 laid on the concrete sleeper 1 is fixed by means of tensioning clamps 3 and sleeper bolts 4, which are connected in the middle of the angle guide plate Next, the central loop of the tensioning clamp 3 is screwed into the plastic screw pin 6 of the concrete sleeper 1 .

[0031] Here, a sharp-angled thread-crossie bolt 4a (see FIG. 3 ) or a round thread-crossie bolt 4b (see FIG. 4 ) is used, which is associated with a correspondingly matched sharp-angled thread-plastic screw pin 6a or round thread-plastic screw pin 6b. The plastic screw pin 6 or 6a, 6b has an approximately cylindrical pin body, which on the head side has a shank region 7 optionally with a pin crown 8 (see FIG. 4 ) and on the one hand has serrations in its continuation. An external thread 9 and on the other hand an internal thread 10 .

[0032] In the two embodiments of the plastic screw pin 6 shown in FIGS. 5 to 7 or 8...

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Abstract

The invention relates to a plastic screw plug (6) for attaching a rail to a sleeper, in particular concrete sleeper, having an essentially cylindrical plug body which has at the head end a stem region (7) which preferably adjoins a plug crown (8) toward the bottom, and in the continuation of which stem region (7) has an outer thread (9) with which it can be turned out of or into the sleeper, and is provided with an inner thread (10) underneath the stem region (7) in order to receive a sleeper screw. The intention is to improve such a plastic screw plug, in particular, with regard to its operating properties such as uniform application of force into the sleeper, simpler mounting and replaceability, reduction of the risk of fracturing, and additionally to permit it to be used in a variable way. For this purpose, the stem region (7) has on the inside, in the junction with the inner thread (10), a shoulder (13) which reduces the internal diameter over part of the length of the stem region (7) and extends in a spiral shape over at least part of the circumference.

Description

technical field [0001] The invention relates to a plastic screw pin (Kunststoffschraubduebel) for fastening a rail to a sleeper, in particular a concrete sleeper, with an approximately cylindrical pin body (Duebelkoerper) with a preferably downward coupling on the head side Rod region (Schaftbereich) of the pin crown (Duebelkrone) and has an external thread in its continuation (Fortsetzung), with which the pin can be screwed out of the sleeper or screwed into it, and to accommodate the sleeper bolt (Schwellenschraube) in the rod region The bottom is provided with internal thread. Background technique [0002] The tracks of railway tracks are almost exclusively laid on concrete sleepers in today's heavily loaded road sections and are laid with a track fixing system consisting of tensioning elements (spannklemme), track guide elements (angle guide plates) and bolt- The pin combination is formed in which a plastic screw pin of the type mentioned at the outset is used, as is kn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B9/18
CPCE01B9/18
Inventor E.丹内贝格T.P.吕策尔R.布达F.迈耶
Owner SCHWIHAG
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