Cable inclination measuring device

Abstract

The present invention relates to a cable inclination measuring device, comprising a device support, a cable connection structure having an axis extending in the front-to-back direction, and an inclinometer mounted on the support. The inclinometer comprises a device support, a pendulum having a rotation axis extending in the left-to-right direction rotatably mounted on the support, and an angle measuring unit for detecting the swing angle of the pendulum. The device support is connected to the device support via a rotation connection structure having a rotation axis extending in the front-to-back direction. The present invention solves the technical problem in the prior art that the pendulum's swing plane cannot be perpendicular to the horizontal plane, thereby affecting measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line safety, and in particular to a cable inclination measuring device for measuring sag of a power transmission line. Background Art

[0002] The sag of a transmission line is the main indicator of safe operation of the line and is related to the safe operation of the line. Therefore, it must be controlled within the specified range. Changes in the line operating load and the surrounding environment will cause changes in the line sag. Excessive sag will not only cause potential accidents, but also limit the transmission capacity of the line, especially in cross-over and densely populated areas.

[0003] The inclination of a transmission cable is an important indicator of transmission line sag, so it is necessary to use an inclination measuring device to measure the inclination of the transmission cable. Existing cable inclination measuring devices, such as the "Inclination Measuring Device for Measuring Transmission Line Sag" disclosed in Chinese Patent CN112577469A, include a device bracket equipped with a cable connection structure, a tilt meter mounted on the bracket, and a tilt measuring unit. A pendulum with a rotation axis extending in the left-right direction is rotatably mounted on the bracket. The tilt measuring unit includes an inclination sensor for detecting the inclination angle of the pendulum and a pendulum encoder for detecting the rotation angle of the pendulum relative to the bracket.

[0004] During use, the cable connection structure, which includes a pair of clamps for clamping and securing the cable, is connected to the cable to be measured. The cable's inclination is measured by measuring the swing angle of the pendulum relative to the measuring device bracket. Existing inclination angle measuring devices have the following problems: to ensure the pendulum can swing freely in the left and right directions, the pendulum's swing plane must be completely perpendicular to the horizontal plane. However, during high-altitude operations, the pendulum's swing plane cannot be completely perpendicular to the horizontal plane after the cable connection structure is fixed to the cable, which affects the accuracy of inclination angle measurement. At high altitudes, due to the complex forces of cable swing and high-altitude wind, the pendulum is difficult to quickly stabilize in a stable position, which also becomes a disadvantage for cable inclination angle measurement. Summary of the Invention

[0005] The object of the present invention is to provide a cable inclination measuring device to solve the technical problem in the prior art that the pendulum swing plane cannot be perpendicular to the horizontal plane, which affects the measurement accuracy.

[0006] To solve the above technical problems, the present invention provides a technical solution for a cable inclination measuring device as follows:

[0007] A cable inclination measuring device includes a device bracket, a cable connection structure with an axis extending in the front-to-back direction is provided on the device bracket, an inclination meter is provided on the device bracket, the inclination meter includes a measuring device bracket, a pendulum with a rotation axis extending in the left-right direction is rotatably mounted on the measuring device bracket, the inclination meter also includes an angle measuring unit for detecting the swing angle of the pendulum, and the measuring device bracket is connected to the device bracket via a rotation connection structure with a rotation axis extending in the front-to-back direction.

[0008] The beneficial effects of the present invention are as follows: when in use, the cable connection structure is connected to the cable to be measured. Due to the existence of the rotating connection structure, under the action of gravity, the measuring device bracket equipped with the pendulum automatically droops to a posture perpendicular to the horizontal plane. Due to the inclination angle of the cable, the pendulum will swing back and forth in a plane perpendicular to the horizontal direction, thereby avoiding the technical problem that the pendulum swing plane cannot be perpendicular to the horizontal plane and affects the measurement accuracy.

[0009] Furthermore, the rotating connection structure includes a bearing hole with an axis extending in the front-to-back direction set on the device bracket, the rotating connection structure includes a rotating bearing set in the bearing hole and a rotating shaft installed in the bearing hole of the rotating bearing, and the device bracket is connected to the rotating shaft.

[0010] Furthermore, the cable connection structure includes a lower cable clamping body and an upper cable clamping body hingedly connected to the lower cable clamping body. The cable connection structure also includes a cable clamping hole opened on the opposite sides of the upper cable clamping body and the lower cable clamping body, and the axis of the cable clamping hole constitutes the axis of the cable connection structure.

[0011] Furthermore, a pendulum sleeve is provided on the outside of the pendulum, and a pendulum damping structure is provided between the pendulum and the pendulum sleeve.

[0012] Furthermore, the pendulum damping structure is a non-contact magnetic damping structure, the pendulum sleeve is made of metal material, and the non-contact magnetic damping structure includes a permanent magnet, which is fixed to the bottom of the pendulum or the bottom inside the pendulum sleeve, and the bottom of the pendulum and the bottom of the pendulum sleeve are arranged at intervals.

[0013] Furthermore, the pendulum sleeve and the pendulum are coaxially arranged, the relative angle between the pendulum sleeve and the measuring device bracket is adjustable, and the pendulum sleeve as a whole is a fan-shaped structure with a small upper part and a large lower part.

[0014] Furthermore, the measuring device bracket includes a bracket mounting sleeve with an axis extending in the left-right direction, the upper end of the pendulum is rotatably assembled in the inner hole of the bracket mounting sleeve, and the upper end of the bracket mounting sleeve is sleeved on the outer periphery of the bracket mounting sleeve.

[0015] Furthermore, a threaded hole with an axis extending radially along the bracket mounting sleeve is provided on the measuring device bracket, and a tightening screw for tightening the pendulum sleeve to achieve relative angular positioning between the pendulum sleeve and the measuring device bracket is installed in the threaded hole.

[0016] Furthermore, the pendulum includes a pendulum connecting rod and a hammer body fixed to the lower end of the pendulum connecting rod, the width of the hammer body is greater than the width of the pendulum connecting rod, and the pendulum sleeve includes an upper sleeve part corresponding to the pendulum connecting rod and a lower sleeve part corresponding to the hammer body, and the upper end width of the lower sleeve part is greater than the lower end width of the lower sleeve part.

[0017] In terms of beneficial effects, a pendulum sleeve with a metal structure is further provided, and a Lorentz force is generated between the permanent magnet at the bottom of the pendulum and the pendulum sleeve when the pendulum swings, which is conducive to the rapid stabilization of the pendulum.

[0018] Furthermore, since the inclination angles of the cables being measured vary, if the pendulum sleeve adopts a fixed structure, in order to adapt to the swing of the pendulum, the circumferential size of the pendulum sleeve needs to be made very large, which is not conducive to carrying it to high altitude operations. In the present invention, the angle between the pendulum sleeve and the measuring device bracket is adjustable, and the installation angle of the pendulum sleeve can be adjusted to adapt to the inclination angle of the cable being measured. The pendulum sleeve with a fan-shaped structure does not need to be too large, which is beneficial to the weight and size of the gap equipment and is convenient for carrying during high altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an illustrative and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 AA section view in the figure;

[0022] Figure 3 yes Figure 1 Side view of

[0023] Figure 4 yes Figure 1 Stereoscopic image of

[0024] Figure 5 yes Figure 1 Schematic diagram of the structure of the device bracket;

[0025] Figure 6 yes Figure 5 BB cross-sectional view;

[0026] Figure 7 is a usage state diagram of an embodiment of the present invention;

[0027] Explanation of the accompanying reference numerals: 1. Device bracket; 2. Upper cable clamping body; 3. Lower cable clamping body; 4. Pendulum sleeve; 5. Threaded hole; 6. Measuring device bracket; 7. Bracket mounting sleeve; 8. Pendulum; 9. Pendulum connecting rod; 10. Hammer; 11. Upper sleeve part; 12. Lower sleeve part; 13. Permanent magnet; 14. Cable clamping hole; 15. Bearing hole; 16. Rotating bearing. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0029] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] An embodiment of a cable inclination measuring device of the present invention is as follows: Figures 1 to 7 As shown: it includes a device bracket 1, and a cable connection structure with an axis extending in the front-to-back direction is provided on the device bracket 1. In this embodiment, the device bracket includes a lower cable clamping body 3 and an upper cable clamping body 2 hingedly connected to the lower cable clamping body. The cable connection structure includes a cable clamping hole 14 opened on opposite sides of the upper cable clamping body and the lower cable clamping body. The axis of the cable clamping hole constitutes the axis of the cable connection structure.

[0031] An inclinometer is provided on the device bracket 1, which includes a measuring device bracket 6 connected to the device bracket through a rotating connection structure. The axis of the rotating connection structure is arranged in parallel with the axis of the cable connection structure, and the axis of the rotating connection structure is located below the axis of the cable connection structure.

[0032] In this embodiment, the measuring device bracket 6 is connected to the lower cable clamping body 3, and the rotating connection structure includes a bearing hole 15 with an axis extending in the front-to-back direction on the lower cable clamping body. The rotating connection structure includes a rotating bearing 16 arranged in the bearing hole and a rotating shaft installed in the bearing hole of the rotating bearing. The measuring device bracket is fixedly connected to the rotating shaft.

[0033] A pendulum 8, with its axis of rotation extending in the left-right direction, is rotatably mounted on a measuring device support. The inclinometer also includes an angle measurement unit for detecting the pendulum's swing angle. In the present invention, the angle measurement unit comprises an inclination sensor (not shown) mounted on the pendulum. The inclination sensor's angle measurement is conventional and will not be described in detail here. A pendulum housing 4 is mounted on the outside of the pendulum. A pendulum damping structure is disposed between the pendulum and the housing 4. This non-contact magnetic damping structure is constructed of a metal material and includes a permanent magnet 13 fixed to the bottom of the pendulum, spaced apart from the bottom of the housing.

[0034] The pendulum housing 4 is coaxially arranged with the pendulum 8. The relative angle between the pendulum housing 4 and the measuring device bracket 6 is adjustable. The pendulum housing has a fan-shaped structure, with a smaller top and a larger bottom. The measuring device bracket includes a bracket mounting sleeve 7, whose axis extends in the left-right direction. The bracket mounting sleeve 7 is fixed relative to the rotation axis. The upper end of the pendulum is rotatably mounted in the inner hole of the bracket mounting sleeve 7. The upper end of the pendulum housing 4 is sleeved around the outer periphery of the bracket mounting sleeve.

[0035] The measuring device bracket is provided with a threaded hole 5 whose axis extends radially along the bracket mounting sleeve. A tightening screw for tightening the pendulum sleeve to achieve relative angular positioning between the pendulum sleeve and the measuring device bracket is installed in the threaded hole.

[0036] The pendulum includes a pendulum connecting rod 9 and a hammer body 10 fixed to the lower end of the pendulum connecting rod 9. The width of the hammer body 10 is greater than the width of the pendulum connecting rod 9. The pendulum sleeve 4 includes an upper sleeve portion 11 corresponding to the pendulum connecting rod 9 and a lower sleeve portion 12 corresponding to the hammer body 10. The upper end width of the lower sleeve portion 12 is greater than the lower end width of the lower sleeve portion 11. The central angle corresponding to the upper sleeve portion of the pendulum sleeve is 10°.

[0037] When using, first predict the inclination angle of the cable to be measured. For example, if the angle between the cable and the vertical direction is about 45 degrees, then at the end of the measurement, the pendulum returns to the vertical posture, and the angle between the pendulum and the axis of the cable connection structure is also about 45 degrees. Therefore, adjust the angle between the pendulum sleeve and the axis of the cable connection structure to about 45 degrees in advance. Figure 7 As shown, the cable is clamped between the upper and lower cable clamps. Due to the rotating connection structure, the pendulum automatically rotates left and right with the measuring device bracket until it is perpendicular to the horizontal plane. Due to the cable's inclination, the pendulum swings back and forth, and the damping structure quickly stabilizes the pendulum. Because the pendulum housing can be adjusted relative to the measuring device bracket, the housing does not need to be large, reducing the size and weight of the main product and making it easier to carry for high-altitude operations.

[0038] In other embodiments of the present invention: the central angle corresponding to the upper sleeve portion of the pendulum sleeve can also be 5°, 20°, or other values ​​between 5 and 20°, and of course it can also be other values ​​outside of 5 to 20°; of course, the pendulum sleeve can also be a non-fan-shaped structure; in this embodiment, the movement of the cable upper clamping body and the cable lower clamping body is achieved by driving the motor, in other embodiments of the present invention, the clamping of the cable upper clamping body and the cable lower clamping body can be achieved by a torsion spring or a bolt; the rotating bearing of the rotating connection structure can also be omitted. For example, if the machining accuracy of the shaft hole is high, the rotating connection structure can include a fixed sleeve and a rotating shaft that directly contacts and rotates with the inner hole of the fixed sleeve.

[0039] In the foregoing description of this specification, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediary; or the internal connection between two components or the interaction between two components. Therefore, unless otherwise expressly defined in this specification, those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise", etc., which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0041] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, "plurality" means at least two, such as two, three or more, etc., unless otherwise clearly specified.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A cable inclination measuring device, comprising a device bracket, a cable connection structure having an axis extending in a front-to-rear direction, an inclinometer mounted on the device bracket, the inclinometer comprising a measuring device bracket, a pendulum having a rotation axis extending in a left-to-right direction rotatably mounted on the measuring device bracket, and an angle measuring unit for detecting the swing angle of the pendulum, characterized in that: The measuring device bracket is connected to the device bracket via a rotating connection structure whose rotation axis extends in the front-to-back direction. A pendulum sleeve is provided on the outer side of the pendulum, and a pendulum damping structure is provided between the pendulum and the pendulum sleeve. The pendulum damping structure is a non-contact magnetic damping structure. The pendulum sleeve is made of metal material. The non-contact magnetic damping structure includes a permanent magnet, which is fixed to the bottom of the pendulum. The bottom of the pendulum and the bottom of the pendulum sleeve are spaced apart. The pendulum sleeve and the pendulum are arranged coaxially. The relative angle between the pendulum sleeve and the measuring device bracket is adjustable. The pendulum sleeve is a fan-shaped structure with a smaller top and a larger bottom. The measuring device bracket includes a bracket mounting sleeve with an axis extending in the left-right direction. The upper end of the pendulum is rotatably assembled in the inner hole of the bracket mounting sleeve. The upper end of the pendulum sleeve is sleeved on the outer periphery of the bracket mounting sleeve. The measuring device bracket is provided with a threaded hole with an axis extending radially along the bracket mounting sleeve. A tightening screw is installed in the threaded hole for tightening the pendulum sleeve to achieve relative angular positioning between the pendulum sleeve and the measuring device bracket. The central angle corresponding to the pendulum sleeve is 5~20°.

2. The cable inclination measuring device according to claim 1, characterized in that: The rotating connection structure includes a bearing hole with an axis extending in the front-to-back direction set on the device bracket. The rotating connection structure includes a rotating bearing set in the bearing hole and a rotating shaft installed in the bearing hole of the rotating bearing. The measuring device bracket is connected to the rotating shaft.

3. The cable inclination measuring device according to claim 1, characterized in that: The device bracket includes a cable lower clamping body and an upper cable clamping body hingedly connected to the lower cable clamping body. The cable connection structure includes cable clamping holes opened on opposite sides of the upper cable clamping body and the lower cable clamping body. The axis of the cable clamping hole constitutes the axis of the cable connection structure.

4. The cable inclination measuring device according to claim 1, characterized in that: The pendulum includes a pendulum connecting rod and a hammer body fixed to the lower end of the pendulum connecting rod, the width of the hammer body is greater than the width of the pendulum connecting rod, the pendulum sleeve includes an upper sleeve part corresponding to the pendulum connecting rod and a lower sleeve part corresponding to the hammer body, the upper end width of the lower sleeve part is greater than the lower end width of the lower sleeve part.

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