CN214066049U - Inclination angle measuring device for measuring sag of power transmission line - Google Patents
Inclination angle measuring device for measuring sag of power transmission line Download PDFInfo
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- CN214066049U CN214066049U CN202022851024.1U CN202022851024U CN214066049U CN 214066049 U CN214066049 U CN 214066049U CN 202022851024 U CN202022851024 U CN 202022851024U CN 214066049 U CN214066049 U CN 214066049U
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Abstract
The utility model relates to a transmission line arc is measured and is used inclination measuring device, including the main survey support, be provided with on the main survey support and be used for the main survey support cable connection structure that links to each other with the cable coaxial line that awaits measuring, be provided with the inclination caliber on the main survey support, the inclination caliber includes the caliber support, rotates on the caliber support and is equipped with the pendulum, still is equipped with the inclination sensor who is used for detecting pendulum inclination on the caliber support, and the inclination caliber is still including being used for detecting the pendulum is relative caliber support turned angle's pendulum encoder. The utility model provides a can reduce product cost, can carry out the transmission line sag of measuring simultaneously again to the overhead line inclination and measure and use inclination measuring device.
Description
Technical Field
The utility model relates to a transmission line sag of transmission line among the transmission line safety technical field is measured and is used inclination measuring device.
Background
The sag of the power transmission line is a main index of safe operation of the line, and is related to the safe operation of the line, so the sag of the line must be controlled within a range specified by design, and because the change of the operation load of the line and the change of the surrounding environment can cause the change of the sag of the line, the overlarge sag not only can cause accident hidden dangers, but also limits the conveying capacity of the line, particularly in cross-over and dense smoke areas.
In order to realize the real-time monitoring of the sag, which is the target of domestic and foreign research for many years, a method for measuring the sag of the wire according to the tension, the inclination angle or the temperature of the wire is deduced from a basic equation of the wire, and a corresponding calculation formula is introduced. The rigidity of the overhead conductor is usually ignored in engineering calculation and is regarded as a flexible cable, so that the conductor can be calculated by a catenary or parabolic equation, and therefore the suspension point inclination angle of the overhead conductor is a key parameter for measuring the sag of the power transmission line.
Because the inclination angle of the suspension point is not easy to measure, the inclination angle of the suspension point is usually corresponding to the inclination angle of the suspension point by detecting the inclination angle of the wire at a distance from the suspension point, and the corresponding inclination angle measuring method is, for example, "power transmission line sag monitoring device, server and method" disclosed in chinese patent CN106546205A, the key of the sag monitoring device is to use an inclination angle sensor to detect the inclination angle of the overhead wire, however, the method has the following problems: as is known, the measurement principle of the tilt sensor is realized by acceleration, and the essential defect is that the accuracy is not very high, the accuracy is worse when the angle is larger, and for some sensors with extremely high accuracy, the cost is quite high, and the ordinary consumers cannot bear the measurement principle.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can reduce product cost, can carry out the transmission line sag of measuring simultaneously again to the overhead line inclination and measure and use inclination measuring device.
In order to solve the technical problem, the technical scheme of the utility model as follows:
the utility model provides a transmission line arc is dip measuring device for measurement that hangs down, includes the main survey support, is provided with on the main survey support to be used for with the main survey support cable connection structure that the cable coaxial line that awaits measuring links to each other, is provided with the inclination caliber on the main survey support, and the inclination caliber includes the caliber support, rotates on the caliber support to be equipped with the pendulum, still is equipped with the angular transducer who is used for detecting pendulum inclination on the caliber support, and the inclination caliber is still including being used for detecting the pendulum is relative caliber support turned angle's pendulum encoder.
The main measuring support comprises a main measuring support rod perpendicular to the axis of the cable connecting structure of the main measuring support, and the measurer support is arranged on the main measuring support rod.
The main measurement support cable connecting structure comprises at least one pair of clamping heads which can move oppositely and move backwards along the length direction of the main measurement support rod, and the clamping heads are provided with clamping surfaces which are used for clamping and matching with the peripheral surface of the measurement part of the cable to be measured.
The clamping surface is a V-shaped clamping surface or an arc-shaped clamping surface.
Two clamping heads in a pair of clamping heads are movable clamping heads, a driving screw rod is assembled on the main measuring support rod in a rotating mode, and the driving screw rod is in threaded connection with the two movable clamping heads to drive the two clamping heads to move relatively and move backwards.
And a hanging point distance displacement sensor for measuring the distance between the main measurement bracket and the corresponding hanging point is arranged on the main measurement bracket.
The hanging point interval displacement sensor is a stay wire displacement sensor.
And the measurer bracket is provided with a damping structure for applying damping force to the pendulum bob.
The damping structure comprises a damping copper sleeve, a swinging shaft is rotatably assembled in an inner hole of the damping copper sleeve, and the pendulum bob is installed at one end of the swinging shaft.
The inclination measuring device further comprises an auxiliary measuring support arranged at intervals with the main measuring support, the auxiliary measuring support comprises an auxiliary measuring support rod arranged in parallel with the main measuring support rod, an auxiliary measuring support cable connecting structure used for being connected with a cable to be measured is arranged on the auxiliary measuring support rod, the inclination measuring device further comprises a balancing rod, one end of the balancing rod is connected with the lower end of the main measuring support rod through a first rotating connecting structure, the other end of the balancing rod is connected with the lower end of the auxiliary measuring support rod through a second rotating connecting structure, a first encoder is arranged at the first rotating connecting structure, a second encoder is arranged at the second rotating connecting structure, and the measurer support is connected to the lower end of the main measuring support rod through a first rotating connecting structure.
The utility model has the advantages that: during the use, through main measurement support cable connection structure with main measurement support connection in the corresponding position of the cable that awaits measuring, correspond the inclination of cable through the angular surveying ware, its concrete principle is: the inclination angle sensor measures the inclination angle of the pendulum, the pendulum encoder measures the rotation angle of the pendulum relative to the measurer support, during measurement, the pendulum is under the action of gravity and has a motion trend of keeping a vertical posture, if the pendulum is in the vertical posture, the reading of the inclination angle sensor is zero (or 90 degrees), because the principle of the inclination angle sensor is to measure the angle of an object relative to the horizontal direction or the vertical direction, the reading of the pendulum encoder is the rotation angle of the pendulum relative to the measurer support (during use, the measurer support is firstly horizontally placed, at the moment, the rotation angle of the pendulum relative to the measurer support is 0 degree), but in fact, due to the swinging of a cable and other complex acting forces such as high-altitude wind power, the pendulum is not always in the vertical posture and is in a posture with a certain included angle with the vertical posture, at the moment, the inclination angle sensor records the inclination angle value of the pendulum, which is equivalent to finding a zero point for the pendulum encoder, thereby can be accurate the inclination value of the cable that awaits measuring of acquisition, the utility model discloses in, inclination sensor only is used for measuring the less inclination value of pendulum, and directly go the big inclination value of measuring the cable among the non-prior art, consequently, inclination sensor's low-angle high accuracy operation requirement can be satisfied, this kind of inclination sensor who satisfies low-angle measurement's cost is lower, measure the turned angle of the relative caliber support of pendulum through the pendulum encoder, the pendulum encoder has the measurement accuracy, characteristics with low costs, utilize the combination of two sensors to guarantee measurement accuracy, reduce product cost simultaneously.
Drawings
Fig. 1 is a state diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of the main measurement mount of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a perspective view of FIG. 2;
FIG. 6 is a schematic view of the main measurement support bar of FIG. 2;
FIG. 7 is a perspective view of FIG. 6;
FIG. 8 is a schematic view showing the construction of the inclinometer of FIG. 2;
FIG. 9 is a sectional view taken along line B-B of FIG. 8;
fig. 10 is a schematic structural view of embodiment 2 of the present invention.
Detailed Description
The utility model discloses well transmission line arc is hung down and is measured with inclination measuring device's embodiment 1 as shown in figure 1~ 10: the main measurement support 7 comprises a main measurement support rod 16 perpendicular to a measurement position of a cable to be measured during use, the auxiliary measurement support comprises an auxiliary measurement support rod arranged in parallel with the main measurement support rod 16, a main measurement support cable connecting structure is arranged on the main measurement support rod, and an auxiliary measurement support cable connecting structure is arranged on the auxiliary measurement support rod. The utility model discloses in, it is the same with the structure of main measurement cradling piece to assist the measurement cradling piece, only carry out corresponding introduction to the structure of main measurement cradling piece now, main measurement cradling piece keeps perpendicular with the measurement position of the cable that awaits measuring through following mode, main measurement cradling cable connection structure includes a pair of holding head 12 that can relative movement and move to the back along main measurement cradling piece length direction, two holding heads in a pair of holding head have the relative clamping face of orientation 18, each clamping face is V-arrangement clamping face. Two holding heads are the movable holding head that moves the complex with the main support bar direction of measuring, rotate on the main support bar of measuring and be equipped with the axis along the drive lead screw 17 that main support bar length direction extended, and the one end of drive lead screw 17 is provided with hand wheel 11, drive lead screw 17 and two movable holding head threaded connection in order to drive two movable holding head relative movement and move dorsad, and movable holding head has constituted with drive lead screw 17 complex screw structure.
Be provided with inclination caliber 8 on the main measurement cradling piece, inclination caliber includes caliber support 13, it is equipped with pendulum 14 to rotate on the caliber support, the rotation axis of pendulum is perpendicular with the cable that awaits measuring, it is used for detecting pendulum inclination sensor 34 of the relative vertical direction (or horizontal direction) of pendulum to still be equipped with on caliber support 13, inclination caliber still includes pendulum encoder 35 that is used for detecting the relative caliber support turned angle of pendulum, pendulum encoder 35 is non-contact encoder. The measurer support is provided with a damping structure for applying damping force to the pendulum bob, the damping structure comprises a damping copper sleeve 3, an inner hole of the damping copper sleeve 3 is rotatably assembled with a swinging shaft 29, and the pendulum bob 14 is installed at one end of the swinging shaft 29. Adjusting bolts 25 penetrate through support side plates 26 of the measurer support, the adjusting bolts 25 are in threaded fit with the damping copper sleeves 28, and therefore the axial positions of the damping copper sleeves 28 can be adjusted by rotating the adjusting bolts 25, the matching lengths of the damping copper sleeves 28 and the swinging shafts 29 are adjusted, and the damping force of the damping copper sleeves on the swinging shafts is adjusted. One end of the swing shaft is supported on a supporting piece 27, the pendulum is installed at the other end of the swing shaft, the supporting piece 27 is fixed on the support side plate 26, the measurer support further comprises a swing shaft radial supporting plate 30 which is matched with the swing shaft in a supporting mode, and the supporting piece 27 and the swing shaft radial supporting plate 30 form two end supports for the swing shaft. The damping structure is favorable for improving the stability of the pendulum bob, and the swing angle of the pendulum bob in the vertical posture is reduced as much as possible, so that the pendulum bob is quickly stabilized. Item 33 in the figure indicates a gauge side plate.
The utility model discloses in, inclination measuring device still includes balancing pole 6, the one end of balancing pole 6 is passed through first rotation connection structure 15 and is linked to each other with the 16 lower extremes of main measurement cradling piece, the other one end of balancing pole 6 is passed through the second and is rotated connection structure and assist and measure the cradling piece lower extreme and link to each other, first rotation connection structure department is provided with first encoder 10, the second rotates connection structure department and is provided with second encoder 4, caliber support 13 rotates connection structure through first and connects in the 16 lower extremes of main measurement cradling piece, first rotation connection structure, the rotation axis that the second rotated connection structure arranges side by side with the rotation axis of pendulum. Due to the existence of the balance bar 6, the main measuring bracket 7 and the auxiliary measuring bracket 3 are connected into a whole, and the stability of measurement in a windy environment is improved. The first encoder detects the rotation angle of the first rotary connecting structure relative to the main measurement support rod, the second encoder detects the rotation angle of the second rotary connecting structure relative to the auxiliary measurement support rod, during final reading, the reading of the pendulum bob encoder and the tilt sensor and the average reading of the first encoder and the second encoder are the included angle between the main measurement support rod and the vertical direction, the cable tilt angle of the position corresponding to the main measurement support and the value are complementary angles, and therefore the cable tilt angle of the cable at the position corresponding to the main measurement support can be obtained. The main measurement support is provided with a hanging point interval displacement sensor for measuring the interval between the main measurement support and the corresponding hanging point, and the hanging point interval displacement sensor in the embodiment is a stay wire displacement sensor. Item 1 in the figure represents a beidou locator used to determine the spacing between two hanging points. Item 5 in the figure represents a displacement sensor for detecting the spacing between the main and auxiliary measuring supports; item 20 indicates a stabilizer bar mounting hole through which the stabilizer bar is inserted.
Under the conditions that the distance between the two hanging points is fixed and the height difference is high at A, B, the cable inclination angle of the main measurement bracket position at a certain distance away from the hanging point A has a corresponding relation with the cable inclination angle of the hanging point A, so that whether the cable inclination angle of the hanging point A is qualified can be determined as long as whether the cable inclination angle of the position is qualified is detected. Item 9 in the figure represents a stay wire displacement sensor measuring the distance between the main measuring bracket and the hanging point a; item 2 represents the cable under test.
In other embodiments of the present invention: each clamping surface can also be an arc-shaped clamping surface; the main measurement bracket cable connection structure and the auxiliary measurement bracket connection structure may not be two movable head structures, for example, the main measurement bracket connection structure includes a clip, the measurement bracket is connected to the corresponding part of the cable by the clip, and the main measurement bracket rod is kept perpendicular to the cable; the pendulum encoder may also be a contact encoder; the displacement sensor for the distance between the hanging points is not required.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a transmission line arc hangs down and measures uses inclination measuring device which characterized in that: the device comprises a main measuring support, wherein a main measuring support cable connecting structure which is used for being connected with a cable to be measured in a coaxial line is arranged on the main measuring support, an inclination angle measurer is arranged on the main measuring support and comprises a measurer support, a pendulum is rotatably assembled on the measurer support, an inclination angle sensor used for detecting the inclination angle of the pendulum is further arranged on the measurer support, and the inclination angle measurer further comprises a pendulum encoder used for detecting the rotation angle of the pendulum relative to the measurer support.
2. The tilt angle measuring device according to claim 1, wherein: the main measuring support comprises a main measuring support rod perpendicular to the axis of the cable connecting structure of the main measuring support, and the measurer support is arranged on the main measuring support rod.
3. The tilt angle measuring device according to claim 2, wherein: the main measurement support cable connecting structure comprises at least one pair of clamping heads which can move oppositely and move backwards along the length direction of the main measurement support rod, and the clamping heads are provided with clamping surfaces which are used for clamping and matching with the peripheral surface of the measurement part of the cable to be measured.
4. The tilt angle measuring device according to claim 3, wherein: two clamping heads in a pair of clamping heads are movable clamping heads, a driving screw rod is assembled on the main measuring support rod in a rotating mode, and the driving screw rod is in threaded connection with the two movable clamping heads to drive the two clamping heads to move relatively and move backwards.
5. The tilt angle measuring device according to claim 1, wherein: and a hanging point distance displacement sensor for measuring the distance between the main measurement bracket and the corresponding hanging point is arranged on the main measurement bracket.
6. The tilt angle measuring device according to claim 5, wherein: the hanging point interval displacement sensor is a stay wire displacement sensor.
7. The tilt angle measuring device according to claim 1, wherein: and the measurer bracket is provided with a damping structure for applying damping force to the pendulum bob.
8. The tilt angle measuring device according to claim 7, wherein: the damping structure comprises a damping copper sleeve, a swinging shaft is rotatably assembled in an inner hole of the damping copper sleeve, and the pendulum bob is installed at one end of the swinging shaft.
9. The inclination angle measuring device according to any one of claims 2 to 8, wherein: the inclination measuring device further comprises an auxiliary measuring support arranged at intervals with the main measuring support, the auxiliary measuring support comprises an auxiliary measuring support rod arranged in parallel with the main measuring support rod, an auxiliary measuring support cable connecting structure used for being connected with a cable to be measured is arranged on the auxiliary measuring support rod, the inclination measuring device further comprises a balancing rod, one end of the balancing rod is connected with the lower end of the main measuring support rod through a first rotating connecting structure, the other end of the balancing rod is connected with the lower end of the auxiliary measuring support rod through a second rotating connecting structure, a first encoder is arranged at the first rotating connecting structure, a second encoder is arranged at the second rotating connecting structure, and the measurer support is connected to the lower end of the main measuring support rod through a first rotating connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022851024.1U CN214066049U (en) | 2020-12-02 | 2020-12-02 | Inclination angle measuring device for measuring sag of power transmission line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022851024.1U CN214066049U (en) | 2020-12-02 | 2020-12-02 | Inclination angle measuring device for measuring sag of power transmission line |
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| CN214066049U true CN214066049U (en) | 2021-08-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577469A (en) * | 2020-12-02 | 2021-03-30 | 郑州东辰科技有限公司 | Inclination angle measuring device for sag measurement of power transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577469A (en) * | 2020-12-02 | 2021-03-30 | 郑州东辰科技有限公司 | Inclination angle measuring device for sag measurement of power transmission line |
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