CN216869488U - Cable position measuring device - Google Patents
Cable position measuring device Download PDFInfo
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- CN216869488U CN216869488U CN202123155423.5U CN202123155423U CN216869488U CN 216869488 U CN216869488 U CN 216869488U CN 202123155423 U CN202123155423 U CN 202123155423U CN 216869488 U CN216869488 U CN 216869488U
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Abstract
The utility model relates to the technical field of measuring devices, and provides a cable position measuring device which comprises a first measuring element, a second measuring element and a third measuring element, wherein the first measuring element is arranged on a first reference point positioned on the inner wall of a tower, and is used for measuring the distance between a point to be measured of a cable and the first reference point in real time; the second measuring element is arranged on a second reference point on the inner wall of the tower drum and used for measuring the distance between the point to be measured of the cable and the second reference point in real time, and the first reference point and the second reference point and the initial position of the point to be measured of the cable are both located on the same cross section of the tower drum. By the arrangement, the problem of measurement of the position and the swinging quantity of the cable is solved.
Description
Technical Field
The utility model relates to the technical field of measuring devices, in particular to a cable position measuring device.
Background
Lie in the swing range of cabin platform to the cable of twisting cable platform department great in the tower section of thick bamboo, strike other spare parts in the tower section of thick bamboo easily, cause the damage to the spare part in the tower section of thick bamboo, have the potential safety hazard. Researches show that the bracket is arranged around the cable, the swing position range of the cable can be limited by the bracket, so that the cable cannot impact other parts in the tower barrel, and the normal operation of the wind turbine generator is not influenced. Therefore, in order to ensure the reasonableness of the support and the arrangement position of the support in the tower, the position and the swinging quantity of the cable need to be measured.
Therefore, how to solve the problem of measuring the position and the swinging amount of the cable becomes an important technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cable position measuring device which is used for measuring the position and the swinging quantity of a cable.
The utility model provides a cable position measuring device, comprising:
the first measuring element is arranged on a first reference point positioned on the inner wall of the tower drum and is used for measuring the distance between a point to be measured of the cable and the first reference point in real time;
the second measuring element is arranged on a second reference point located on the inner wall of the tower drum and used for measuring the distance between the point to be measured of the cable and the second reference point in real time, and the first reference point and the second reference point and the initial position of the point to be measured of the cable are both located on the same cross section of the tower drum.
Through establishing a corresponding plane rectangular coordinate system, combining the measurement results of the first measurement element and the second measurement element, and through analysis and calculation, the coordinates of the swing position of the point to be measured of the cable in the cross section can be determined. The swinging amount of the point to be measured of the cable in the measuring process can be determined by combining a plurality of measuring results and analyzing and calculating results.
The cable position measuring device provided by the utility model further comprises a third measuring element, wherein the third measuring element is arranged on a third reference point positioned on the tower platform, and the third measuring element is used for measuring the distance between the point to be measured of the cable and the third reference point in real time.
By establishing a space rectangular coordinate system and combining the measurement results of the first measurement element, the second measurement element and the third measurement element, the coordinates of the swing position of the point to be measured of the cable in the three-dimensional space can be determined through analysis and calculation. The swinging amount of the point to be measured of the cable in the measuring process can be determined by combining a plurality of measuring results and analyzing and calculating results. The accuracy of the measurement result of the position and the swing quantity of the cable is improved, and the method is suitable for the situation with higher requirement on the swing quantity of the cable along the axial direction of the tower drum
According to the cable position measuring device provided by the utility model, the straight line where the first measuring element and the center of the cross section are located is perpendicular to the straight line where the second measuring element and the center of the cross section are located.
According to the cable position measuring device provided by the utility model, the third measuring element is positioned at the center of the tower platform.
According to the cable position measuring device provided by the utility model, the first measuring element, the second measuring element and the third measuring element are all stay wire displacement sensors;
the housing of the first measuring element, the housing of the second measuring element and the housing of the third measuring element are connected to the first reference point, the second reference point and the third reference point, respectively;
and the stay wire terminal of the first measuring element, the stay wire terminal of the second measuring element and the stay wire terminal of the third measuring element are connected to a point to be measured of the cable.
According to the cable position measuring device provided by the utility model, a spacer ring is arranged at a point to be measured of the cable, and the stay wire terminal of the first measuring element, the stay wire terminal of the second measuring element and the stay wire terminal of the third measuring element are connected with the spacer ring.
According to the cable position measuring device provided by the utility model, the cable position measuring device further comprises a connecting piece which can be connected with a point to be measured of the cable, and the pull wire terminal of the first measuring element, the pull wire terminal of the second measuring element and the pull wire terminal of the third measuring element are connected with the connecting piece.
According to the cable position measuring device provided by the utility model, the connecting piece is of an annular structure, the connecting piece is detachably sleeved outside a point to be measured of the cable, and the pull wire terminal of the first measuring element, the pull wire terminal of the second measuring element and the pull wire terminal of the third measuring element are connected with the connecting piece.
According to the cable position measuring device provided by the utility model, the first measuring element and the second measuring element are detachably connected with the inner wall of the tower, and the third measuring element is detachably connected with the tower platform.
According to the cable position measuring device provided by the utility model, magnetic attraction pieces are arranged on the first measuring element, the second measuring element and the third measuring element.
When the cable position measuring device provided by the utility model is used for measuring the position of a cable, the position with the maximum swinging amount on the cable is selected as a point to be measured, a first reference point and a second reference point which are positioned on the same cross section with the initial position of the point to be measured of the cable are selected on the inner wall of a tower, and then a first measuring element and a second measuring element are respectively fixed on the first reference point and the second reference point. The first measuring element and the second measuring element respectively measure the distance between the point to be measured of the cable and the first reference point and the distance between the point to be measured of the cable and the second reference point in real time. The swing position and the swing amount of the point to be measured of the cable can be analyzed and calculated by combining the arrangement positions of the first measuring element and the second measuring element and the measurement results of the arrangement positions. The analysis and calculation results of the swing position and the swing amount of the point to be measured of the cable provide basis for the design and the installation position of the support, the rationality of the support is improved, and the safe and stable operation of the wind turbine generator is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a cable position measuring device provided by the present invention;
FIG. 2 is a schematic diagram of a planar rectangular coordinate system constructed according to the present invention;
fig. 3 is a schematic diagram of a spatial rectangular coordinate system constructed by the present invention.
Reference numerals:
1: a first measuring element; 2: a tower drum; 3: a second measuring element; 4: a third measuring element; 5: a tower platform; a: a first reference point; b: a second reference point; c: a third reference point; d: the point of cable to be measured.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The cable position measuring device of the present invention is described below with reference to fig. 1 to 3.
As shown in FIG. 1, the cable position measuring device provided by the embodiment of the utility model comprises a first measuring element 1 and a second measuring element 3, which are respectively arranged on a first reference point A and a second reference point B of the inner wall of a tower 2, and the initial positions of the first measuring element 1 and the second measuring element 3 and a point D to be measured of a cable are located on the same cross section of the tower 2.
The first measuring element 1 is used for measuring the distance between a point D to be measured of the cable and a first reference point A in real time, and the second measuring element 3 is used for measuring the distance between the point D to be measured of the cable and a second reference point B in real time.
Through establishing a corresponding plane rectangular coordinate system and combining the measurement results of the first measurement element 1 and the second measurement element 3, the coordinates of the swing position of the point D to be measured of the cable in the cross section can be determined through analysis and calculation. The swinging amount of the point D to be measured of the cable in the measuring process can be determined by combining a plurality of measuring results and analyzing and calculating results.
The analysis and calculation results of the swing position and the swing amount of the point D to be measured of the cable provide basis for the design and installation position of the support, the rationality of the support is improved, and the safe and stable operation of the wind turbine generator is ensured.
It should be noted that the point D to be measured of the cable is generally selected from the position on the cable where the swinging amount is the largest.
In the embodiment of the present invention, the cable position measuring device further includes a third measuring element 4, where the third measuring element 4 is disposed on a third reference point C of the tower platform 5, and is configured to measure a distance between a point D to be measured of the cable and the third reference point C in real time, that is, the third measuring element 4 may measure the axial swing of the point D to be measured of the cable along the tower 2. The third measuring element 4, the first measuring element 1 and the second measuring element 3 are not located in the same plane, and a spatial rectangular coordinate system is established, and the coordinates of the swing position of the point D to be measured of the cable in a three-dimensional space can be determined through analysis and calculation by combining the measuring results of the first measuring element 1, the second measuring element 3 and the third measuring element 4. The swinging amount of the point D to be measured of the cable in the measuring process can be determined by combining a plurality of measuring results and analyzing and calculating results. The accuracy of the measurement result of the position and the swing amount of the cable is improved, and the method is suitable for the situation with higher requirements on the swing amount of the cable along the axial direction of the tower drum 2.
In summary, the first measuring element 1 and the second measuring element 3 can be used to analyze and calculate the swing position and the swing amount of the point D to be measured of the cable in the plane, and the first measuring element 1, the second measuring element 3 and the third measuring element 4 can be used to analyze and calculate the swing position and the swing amount of the point D to be measured of the cable in the space.
In this embodiment, the first measuring element 1 is perpendicular to the straight line of the center of the cross section and the second measuring element 3 is perpendicular to the straight line of the center of the cross section. I.e. the diameter of the tower 2 corresponding to the first measuring element 1 is perpendicular to the diameter of the tower 2 corresponding to the second measuring element 3. With the arrangement, referring to fig. 2, a plane rectangular coordinate system is established by taking the circle center of the cross section of the tower drum 2 as an origin o, taking the straight line where the circle centers of the first measuring element 1 and the cross section are located as an x-axis, and taking the straight line where the circle centers of the second measuring element 3 and the cross section are located as a y-axis. In the analysis calculation process, since the ordinate of the first measuring element 1 and the abscissa of the second measuring element 3 are both 0, the calculation process can be simplified.
When the installation position of the first measuring element 1 and the measuring position of the second measuring element 3 are selected, the position of the cross section, corresponding to the initial position of the point D to be measured of the cable, on the tower drum 2 can be determined, then the first measuring element 1 is fixed, and then the reference length value is measured along the circumferential direction of the tower drum 2 to determine the position of the second measuring element 3. The reference length value is one quarter or three quarters of the circumference of the tower 2.
Further, the third measuring element 4 is located at the center of the tower platform 5, and the axis of the tower 2 is generally a vertical line, that is, the center of the cross section where the initial position of the cable to-be-measured point D is located and the center of the tower platform 5 are located on the same vertical line. Referring to fig. 3, on the basis of the rectangular plane coordinate system, a rectangular spatial coordinate system is further formed by taking a straight line where the third measuring element 4 and the center of the cross section are located as a z-axis. In the analysis and calculation process, since the ordinate and the ordinate of the first measuring element 1, the abscissa and the ordinate of the second measuring element 3, and the abscissa and the ordinate of the third measuring element 4 are all 0, the calculation process can be simplified.
With specific reference to fig. 3, a process of analyzing and calculating the spatial position coordinates of the point D to be measured of the cable is explained.
After the position of a point D to be measured of the cable is determined, a spatial rectangular coordinate system is constructed by taking the circle center of a cross section corresponding to the initial position of the point D to be measured of the cable on the tower drum 2 as an original point o, taking the straight line where the circle centers of the first measuring element 1 and the cross section are located as an x axis, taking the straight line where the circle centers of the second measuring element 3 and the cross section are located as a y axis, and taking the straight line where the circle centers of the third measuring element 4 and the cross section are located as a z axis.
During the measurement, the first measurement element 1, the second measurement element 3 and the third measurement element 4 are fixed in position, the coordinates are a (a, 0, 0), B (0, B, 0) and C (0, 0, C), the coordinate of the point D to be measured of the cable during the swinging process is D (x, y, z), the distance between the point D to be measured of the cable and the first reference point a measured by the first measurement element 1 is AD, the distance between the point D to be measured of the cable and the second reference point B measured by the second measurement element 3 is BD, and the distance between the point D to be measured of the cable and the third reference point C measured by the third measurement element 4 is CD, and according to the geometric position relationship, the following relation can be obtained:
the specific values of AD, BD and CD measured by the first measuring element 1, the second measuring element 3 and the third measuring element 4 are substituted into the relational expression, and the values of x, y and z can be determined through calculation, so that the position coordinates of the point D to be measured of the cable can be determined.
By utilizing the cable position measuring device in the embodiment of the utility model, a plurality of groups of specific numerical values of AD, BD and CD can be collected in the measuring process, and accordingly, a plurality of position coordinates of the point D to be measured of the cable in the swinging process can be calculated.
And the swinging amount of the point D to be measured of the cable in the measuring process can be determined by integrating a plurality of position coordinates.
It should be noted that the cable position measuring device in the embodiment of the present invention is only responsible for measuring the distance between the point D to be measured of the cable and each reference point, and the process of performing calculation and analysis according to the installation position of each measuring element and the measurement result may be manually performed; or by means of a control system, which can be implemented by a person skilled in the art on the basis of the prior art and the common general knowledge in the field and will not be described in detail here.
In the embodiment of the present invention, the first measuring element 1, the second measuring element 3, and the third measuring element 4 may be a pull wire displacement sensor. The stay wire displacement sensor comprises a shell and a stay wire terminal arranged at one end of the stay wire. The shell of the first measuring element 1, the shell of the second measuring element 3 and the shell of the third measuring element 4 are respectively fixed on a first reference point A, a second reference point B and a third reference point C, and the stay wire terminal of the first measuring element 1, the stay wire terminal of the second measuring element 3 and the stay wire terminal of the third measuring element 4 are all connected to a point D to be measured of the cable.
When the position of the point D to be measured of the cable swings, the distance between the shell of the stay wire sensor and the point D to be measured of the cable changes, the extension length of a stay wire of the stay wire displacement sensor changes correspondingly, and therefore a corresponding result is measured.
The stay wire displacement sensor adopts a contact type measuring mode for distance, the accuracy of the measuring result is high, and the reliability of the cable position measuring device in the embodiment of the utility model can be improved.
In the embodiment of the present invention, the connection between the first measuring element 1 and the inner wall of the tower 2, the connection between the second measuring element 3 and the inner wall of the tower 2, and the connection between the third measuring element 4 and the tower platform 5 are all detachably connected. When the swing position of the cable needs to be measured, the first measuring element 1, the second measuring element 3 and the third measuring element 4 are fixed at corresponding positions, and after the measurement is finished, the first measuring element 1, the second measuring element 3 and the third measuring element 4 are detached and can be repeatedly used for measurement of other cable positions.
The casing of the tower 2 and the casing of the stay wire displacement sensor are generally made of ferrous metal, so in this embodiment, the magnetic attraction piece is used to realize the connection between the first measuring element 1 and the second measuring element 3 and the inner wall of the tower 2 and the connection between the third measuring element 4 and the tower platform 5.
Above-mentioned magnetism is inhaled the piece and can be chooseed for use neodymium iron boron magnetism iron boron has good magnetic property, can improve the positional stability who acts as go-between displacement sensor, guarantees measuring result's accuracy.
The cable is generally provided with a spacing ring, and if the cable is provided with the spacing ring at the point D to be measured, the stay wire terminal of the first measuring element 1, the stay wire terminal of the second measuring element 3 and the stay wire terminal of the third measuring element 4 can be directly connected to the spacing ring.
In the embodiment of the utility model, the cable position measuring device further comprises a connecting piece, and the connecting piece can be connected with the point D to be measured of the cable. The stay wire terminal of the first measuring element 1, the stay wire terminal of the second measuring element 3 and the stay wire terminal of the third measuring element 4 are connected with a connecting piece.
When the cable is installed, compared with the case that the cable terminal of the first measuring element 1, the cable terminal of the second measuring element 3 and the cable terminal of the third measuring element 4 are connected with the point D to be measured of the cable one by one, in this embodiment, only the connecting piece needs to be connected with the point D to be measured of the cable, the operation is simpler and more convenient, and the installation efficiency can be improved.
In addition, for the condition that no spacer ring is arranged at the point D to be measured of the cable, the connection between the stay wire terminal and the point D to be measured of the cable can be realized, and the adaptability is strong.
In this embodiment, the connecting member is arranged in an annular structure, and the connecting member can be detachably sleeved outside the point D to be measured of the cable.
Specifically, the connecting member may be configured as a hoop, and the connecting member includes two hoop bodies, where the hoop bodies are semi-annular, and the two hoop bodies surround and form an annular structure. The two ends of the clamp body are provided with the connecting plates, after the two clamp bodies surround to form an annular structure, the connecting plates of the two clamp bodies are fixed together by using fasteners such as bolts, and the operation is simple and convenient.
Connecting studs may be provided on the circumferential side of the connector, and corresponding internal threads may be provided on the wire terminal of the first measuring element 1, the wire terminal of the second measuring element 3, and the wire terminal of the third measuring element 4, so that the wire terminals are screwed to the connector.
When only the first measuring element 1 and the second measuring element 3 need to be used, the third measuring element 4 can be removed for facilitating the measurement.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cable position measuring device, comprising:
the first measuring element is arranged on a first reference point positioned on the inner wall of the tower drum and is used for measuring the distance between a point to be measured of the cable and the first reference point in real time;
the second measuring element is arranged on a second reference point located on the inner wall of the tower drum and used for measuring the distance between the point to be measured of the cable and the second reference point in real time, and the first reference point and the second reference point and the initial position of the point to be measured of the cable are both located on the same cross section of the tower drum.
2. The cable position measuring device of claim 1, further comprising a third measuring element disposed on a third reference point located on the tower platform, wherein the third measuring element is configured to measure a distance between the point to be measured of the cable and the third reference point in real time.
3. The cable position measuring device of claim 1 or 2, wherein the first measuring element is perpendicular to a line at the center of the cross-section and the second measuring element is perpendicular to a line at the center of the cross-section.
4. The cable position measurement device of claim 2, wherein the third measurement element is located at a center of the tower platform.
5. The cable position measuring device of claim 2, wherein the first measuring element, the second measuring element, and the third measuring element are pull-wire displacement sensors;
the housing of the first measuring element, the housing of the second measuring element and the housing of the third measuring element are connected to the first reference point, the second reference point and the third reference point, respectively;
and the stay wire terminal of the first measuring element, the stay wire terminal of the second measuring element and the stay wire terminal of the third measuring element are connected to a point to be measured of the cable.
6. The cable position measuring device according to claim 5, wherein a spacer ring is provided at a point to be measured of the cable, and the wire terminal of the first measuring element, the wire terminal of the second measuring element, and the wire terminal of the third measuring element are connected to the spacer ring.
7. The cable position measuring device according to claim 5, further comprising a connecting member connectable to a point to be measured of the cable, the wire terminal of the first measuring element, the wire terminal of the second measuring element, and the wire terminal of the third measuring element being connected to the connecting member.
8. The cable position measuring device of claim 7, wherein the connecting member is a ring-shaped structure, and the connecting member is detachably sleeved outside the point to be measured of the cable.
9. The cable position measurement device of claim 2, wherein the first and second measurement elements are removably coupled to the tower inner wall and the third measurement element is removably coupled to the tower platform.
10. The cable position measuring device of claim 2, wherein the first measuring element, the second measuring element, and the third measuring element are provided with magnetically attractive elements thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123155423.5U CN216869488U (en) | 2021-12-14 | 2021-12-14 | Cable position measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123155423.5U CN216869488U (en) | 2021-12-14 | 2021-12-14 | Cable position measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216869488U true CN216869488U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123155423.5U Active CN216869488U (en) | 2021-12-14 | 2021-12-14 | Cable position measuring device |
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| CN (1) | CN216869488U (en) |
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2021
- 2021-12-14 CN CN202123155423.5U patent/CN216869488U/en active Active
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