KR101865180B1

KR101865180B1 - Distributed load and torsion load conversion device for uniform pressure acting on blade

Info

Publication number: KR101865180B1
Application number: KR1020170126902A
Authority: KR
Inventors: 김병문; 정연종; 서동환; 박종훈; 손영수; 박진수; 허철구; 허철기; 김재두
Original assignee: (주)영광공작소; 동국대학교 경주캠퍼스 산학협력단
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2018-06-07

Abstract

The distributed load and torsional load transducer of uniform pressure acting on the blades of the present invention comprises a frame; A fixing member installed in the frame and fixed to the blade; And a clamp installed at two or more points of the blade and applying a load by being pulled by the wire.
Thereby, the clamp is configured to apply a load to two or more points of the blade, so that the distribution load and the twist can be applied so as to be similar to the actual use environment of the blade.

Description

Technical Field [0001] The present invention relates to a distributed load and torsion load converting device for uniform pressure acting on a blade,

More particularly, the present invention relates to a distribution load of a uniform pressure acting on a blade capable of applying a distribution load so as to be similar to an actual use environment of the blade, To a load transducer.

Generally, a blade used for wind power generation is used to obtain a rotation force necessary for rotating an electric motor for generating electric power. A blade used for a rotary wing aircraft is used for an aircraft such as a lift, a thrust and a steering force .

The rotation of the blade causes a change in the aerodynamic distribution around the blade, and this phenomenon acts on the blade itself as a bending load and a torsional load.

Aerodynamic load monitoring for safe operation of the blades and a device for measuring aerodynamic loads are needed to measure the aerodynamic distribution in the radial direction of the blades.

Also, resonance generators for generating aerodynamic loads have been developed in various forms.

For example, Korean Patent Laid-Open Publication No. 10-2011-0078999 includes a calibrator 40 as an arrangement of a measuring device for measuring an aerodynamic load as shown in Fig. 1 attached hereto. The calibrator (40) is provided with a plurality of rings (41, 42, 43, 44) on which weights are installed, and a space (45) into which the blades can be fitted is formed.

However, since the calibrator 40 configured as described above connects the ends of the wires to the rings 41, 42, 43, and 44, and then applies a tensile force repeatedly to measure the load, a distribution load and a twist test Lt; / RTI >

Therefore, it is required to develop a uniform distribution pressure distribution apparatus and a torsional load transducer which act on an improved type blade capable of applying a distribution load similar to an actual use environment of the blade.

Published Patent Publication No. 2011-0078999 (Published July 7, 2011)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional methods described above, and it is an object of the present invention to provide a method and apparatus for measuring a uniform pressure acting on a blade capable of applying a distributed load and a twist to two or more points on the blade, And to provide a torsional load transducer.

In order to achieve the above object, the present invention provides a distributed load and torsional load transducer for uniform pressure acting on a blade, comprising: a frame; A fixing member installed in the frame and fixed to the blade; And a clamp installed at two or more points of the blade and applying a load by being pulled by the wire.

In addition, the frame is provided with at least two first sheaves, the clamp includes a second sheave, and the first and second sheaves are connected by a single wire to exert a tensile force.

In addition, the frame may be provided with a guide rail configured to be movable along a long side of the frame, and the first sheave may be movable along the length direction of the guide rail.

In addition, the clamp is composed of five pieces, and a distribution load is applied to five points of the blade.

In addition, the fixing member is rotated by hinge coupling to the frame, a stopper formed with a guide groove is formed in the frame, and a guide protrusion corresponding to the guide groove is formed in the fixing member.

According to the distributed load and torsional load transducer of uniform pressure acting on the blades according to the present invention, the clamp can be configured to apply a load to two or more points of the blade so that the distributed load and torsion can be applied There is an effect.

1 is a perspective view showing the configuration of a calibrator attached to Korean Patent Laid-Open Publication No. 10-2011-0078999.
FIG. 2 is a perspective view showing a distribution load and a torsional load transducer of a uniform pressure acting on the blade according to the present invention. FIG.
Figure 3 is a side view of Figure 2;
4 is a front view of Fig.
5 is a use state diagram of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing a distribution load and a torsional load changing device of a uniform pressure acting on the blade according to the present invention, FIG. 3 is a side view of FIG. 2, FIG. 4 is a front view of FIG. 2, Fig.

As shown in Figs. 2 to 5, the distribution load and the torsional load converting device A of the uniform pressure acting on the blades according to the present invention are designed such that the blade (B) It is designed to be implemented in the experimental equipment, and the experiment which was measured by the conventional concentrated load is implemented so that it can be measured by the distribution load.

In particular, we have simplified the measurement of experimental data using a single wire when applying distributed loads.

Specifically, the uniform load distribution and torsional load transducer (A) acting on the blade of the present invention includes a frame (100), a fixing member (200) provided on the frame (100) And a clamp 400 installed at two or more points of the blade B for applying a load by being pulled by the wire 300.

The frame 100 is formed to form a rectangular parallelepiped. The six surfaces are open, and only the skeleton is provided. It is easy to attach the sensors for measuring the distribution load.

The fixing member 200 is a device that causes the blade B to form an angle with the ground surface in consideration of the displacement of the blade B and the angle of the wire 300.

The wire 300 is connected to be perpendicular to the transverse plane of the blade or the wire is connected to the wire B so as to be able to load with the length ratio of the cross section of the blade B, You can also connect angles not perpendicular.

The frame 100 is provided with at least two first sheaves 500 and the clamp 400 is provided with a second sheave 600 and the first and second sheaves 500, 300 so as to exert a tensile force.

The clamp 400 is configured to have a distribution load on five points of the blade B. At this time, the intervals of the clamps can be selected in equal interval or unequal interval.

Thus, the clamp 400 can be configured to apply a load to two or more points of the blade, so that the distribution load and torsion can be applied so as to be similar to the actual operating environment of the blade.

The frame 100 is provided with a guide rail 700 configured to be movable along a long side of the frame 100. The first pulley 500 is moved along the longitudinal direction of the guide rail 700, Lt; / RTI >

That is, the first sheave 500 moving along the guide rail 700 can apply a load to twist the blade B so that various types of loads can be tested.

The fixing member 200 is rotated by hinge coupling to the frame 100 and a stopper 800 having a guide groove 810 is formed in the frame 100. The fixing member 200 The guide protrusion 210 corresponding to the guide groove 810 is formed.

Thereby, the blade forms an angle with the ground surface by the stopper guiding the displacement restriction of the blade and the movement of the fixing member.

Although the preferred embodiments of the present invention have been described in detail, the technical scope of the present invention is not limited to the above-described embodiments, but should be construed according to the claims. It will be understood by those skilled in the art that many modifications and variations are possible without departing from the scope of the present invention.

For example, although the blade has been described in the above description, the present invention is not limited thereto, and it is noted that the distribution load of various apparatuses can be measured.

A - Distributed load and torsional load transducers of uniform pressure acting on the blade
B - blade
100 - frame
200 - fixing member
300-wire
400 - Clamp
500 - 1st pulley
600 - 2nd pulley
700 - Guide rail
800 - Stopper

Claims

A rectangular parallelopiped frame 100 having six open sides;
A fixing member 200 installed on the frame 100 and to which the blade B is fixed; And
And a clamp (400) installed at two or more points of the blade (B) to apply a load by pulling the wire (300)
The frame 100 is provided with at least two first sheaves 500 and the clamp includes a second sheave 600 and the first and second sheaves 500 and 600 are formed by a single wire 300 Connected and tensioned,
The frame 100 is provided with a guide rail 700 configured to be movable along a long side of the frame 100. The first sheave 500 is movable along the longitudinal direction of the guide rail 700 Respectively,
The fixing member 200 is rotated by the hinge coupling to the frame 100,
A stopper 800 having a guide groove 810 is formed in the frame 100 and a guide protrusion 210 corresponding to the guide groove 810 is formed in the fixing member 200. [ Distributed load and torsional load transducer of uniform pressure acting.

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The method according to claim 1,
Wherein the clamp (400) is constituted by five pieces and applies a distributed load to five points of the blade (B).

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