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Blade connection for rotor blades

A technology of rotor blades and coupling parts, applied in the field of blade coupling parts, can solve the problems of improvement of manufacturing technology, cost, etc., and achieve the effect of improving the bending moment of the blade root

Active Publication Date: 2016-11-23
WINDNOVATION ENG SOLUTIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] These solutions are associated with increased costs in terms of manufacturing technology, both for the transverse pin itself and for its integration into the rotor blade structure.

Method used

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  • Blade connection for rotor blades
  • Blade connection for rotor blades
  • Blade connection for rotor blades

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] figure 1 A blade connection for a rotor blade 1 is shown on the coupling part 2 by means of a T-pin connection, wherein a transverse pin 4 in the rotor blade 1 is connected to the coupling part 2 by means of a stress screw 3 .

[0027] Parallel to the axis 10 of the transverse pin 4 and between the transverse pin 4 and the coupling part 2 , a further geometric body 5 is arranged in the rotor blade 1 at a distance from the transverse pin 4 , the outer circumference of which not only has Cylindrical segments and cylindrical.

[0028] The stress bolt 3 passes through the geometric body 5 in the through-hole 12 . The stress bolt 3 is screwed with the transverse pin 4 .

[0029] exist figure 2 shows an embodiment in which the transverse pin 4 and the geometry 5 have a common flat contact surface 8 .

[0030] In this embodiment, the moment of resistance of the transverse pin 4 against bending is increased by the mutual supporting effect of the geometric body 5 and the tr...

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PUM

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Abstract

The invention relates to a blade connection for rotor blades with T-bolt connections between the rotor blade (1) and a connection part (2), wherein in the case of the T-bolt connections a transverse bolt (4) in the rotor blade (1) is connected to the connection part (2) by means of at least one expansion screw (3), wherein there is arranged in the rotor blade (1) at least one further body (5, 6) parallel to the axis (10) of the transverse bolt and between the transverse bolt (4) and the connection part (2), the outer surface of which further body has at least one cylindrical section (7) which extends parallel to the outer surface of the transverse bolt (4) and the at least one expansion screw (3) passes through the or these body or bodies (5, 6).

Description

technical field [0001] The invention relates to a blade coupling for a rotor blade, in particular of a wind power plant, with a T-pin connection. Background technique [0002] The transverse pins used in the case of a T-pin connection must be pressed into the considerably softer laminate of the rotor blade, in particular in the laminate of the blade root. In the case of always high loads, especially the bending load of the transverse pin is critical, because this load can only be reduced in a simple manner by increasing the diameter, but this compulsorily leads to a reduction of the individual The laminate between the transverse pins and thus weakens the laminate. [0003] In order to solve this problem, two solutions are proposed in DE 10 2006 022 272 C5: On the one hand, a higher bending stiffness of the transverse pin should be achieved by combining it with the longitudinal pin for T-shaped connection The threaded transverse pin has a greater extent in the direction of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D13/10
CPCF03D1/0658F05B2250/312F05B2260/301Y02E10/72
Inventor 弗兰克·泽瓦尔德
Owner WINDNOVATION ENG SOLUTIONS
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