Safety line distance measuring device for overhead cable in electric power engineering

Abstract

The invention relates to the technical field of electric power engineering measurement, in particular to an electric power engineering overhead cable safety line distance measuring device which comprises a self-adaptive mounting base, an automatic telescopic support and a safety line distance measuring assembly. The automatic telescopic support is arranged between the self-adaptive mounting base and the safety line distance measuring assembly, the self-adaptive mounting base is detachably mounted on the overhead cable supporting frame, and the mounting strength of the self-adaptive mounting base and the overhead cable supporting frame is synchronously adjusted along with stretching and retracting of the automatic telescopic support. The self-adaptive mounting base comprises a fixing mechanism clamped and mounted on the overhead cable supporting frame, and a self-adaptive reinforcing piece is arranged on the side, facing the automatic telescopic support, of the interior of the fixing mechanism and rotationally connected with the driving end of the automatic telescopic support. The safety line distance measuring assembly comprises a self-adaptive measuring unit which is installed on the lower side of the head end portion of the automatic telescopic support in a lifting mode. The device is accurate in measurement, automatic in operation, high in stability and high in structural linkage efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of electric power engineering measurement, in particular to a device for measuring the safe line distance of overhead cables in electric power engineering. Background Art

[0002] In power engineering, the safe line distance of overhead cables is of vital importance, involving line safety, equipment protection and personnel safety. The safe line distance refers to the minimum distance between the cable and the ground, buildings, other cables, etc., to ensure the stable operation of the power system. The safe line distance measuring device is used to accurately measure the distance between the cable and the surrounding objects or the ground. The main functions include: accurately measuring the distance between the cable and the ground, buildings, etc.; automatically recording the measurement data for subsequent analysis, and issuing an alarm when the distance is below the safety threshold.

[0003] The types of existing measuring devices include: Laser rangefinder: uses laser technology to measure distance with high accuracy.

[0004] Ultrasonic rangefinder: It uses ultrasonic measurement and is suitable for complex environments.

[0005] Infrared rangefinder: Utilizes infrared technology, suitable for nighttime or low-light environments.

[0006] GPS positioning measurement system: combined with GPS technology, suitable for large-scale measurement.

[0007] That is, no matter which type of measuring instrument is used, it needs to be equipped with an effective mobile system during use, so that it can accurately measure the safety line distance along the path to be measured. Since overhead cables are mostly used in complex outdoor environments and the distance between adjacent cable support frames is far, it is difficult to control the lateral movement of the measuring device when performing safety distance measurement in the vertical direction. In addition, the overhead cables in the installed and used state are subject to gravity or external pressure from rain, snow, and birds, resulting in the vertical safety line distance being unable to be maintained at a fixed distance. Therefore, when measuring the vertical safety line distance, this problem needs to be considered to ensure the accuracy of the safety line distance measurement; Therefore, in view of the above-mentioned problems, the present technical solution proposes a device for measuring the safe line distance of overhead cables in power engineering. Summary of the invention

[0008] The purpose of the present invention is to provide a device for measuring the safe line distance of overhead cables in power engineering to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions: A device for measuring the safe line distance of an overhead cable in an electric power engineering project comprises an adaptive mounting base, an automatic telescopic bracket, and a safe line distance measuring component; the automatic telescopic bracket is arranged between the adaptive mounting base and the safe line distance measuring component, the adaptive mounting base is detachably mounted on an overhead cable support frame and follows the extension and extension of the automatic telescopic bracket to synchronously adjust the installation force of the overhead cable support frame (as the center of gravity between the adaptive mounting base, the automatic telescopic bracket, and the safe line distance measuring component will continuously move away from the adaptive mounting base as the automatic telescopic bracket is continuously extended, the support force requirement of the adaptive mounting base will continuously increase at this time), the automatic telescopic bracket moves along the length direction of the overhead cable, and adjusts the lateral position of the safe line distance measuring component, thereby realizing the automatic mobile measurement of the vertical safe line distance of the overhead cable; The adaptive installation base includes a fixing mechanism clamped and installed on the overhead cable support frame, an adaptive reinforcement piece is arranged on one side of the fixing mechanism facing the automatic telescopic bracket, and the adaptive reinforcement piece is rotatably connected with the driving end of the automatic telescopic bracket. The driving end of the automatic telescopic bracket drives the automatic telescopic bracket to drive the safety line distance measurement component to extend outward, and controls the adaptive reinforcement piece to gradually contact the overhead cable support frame, cooperates with the fixing mechanism, and gradually increases the installation strength of the adaptive installation base and the overhead cable support frame; The safety line distance measurement component includes an adaptive measuring unit installed in a lifting manner at the lower side of the head end of the automatic telescopic bracket. The adaptive measuring unit is in elastic sliding contact with the overhead cable. Under the extension and retraction of the automatic telescopic bracket, the adaptive measuring unit is controlled to move along the length direction of the overhead cable, and downward pressure is applied to the overhead cable to simulate the vertical position height under the maximum force, and the height from the ground obstacle at this time (vertical safety line distance) is measured. The adaptive measuring unit includes a U-shaped positioning box in sliding contact with the overhead cable. Laser rangefinders for measuring the vertical safety line distance are installed on both sides of the U-shaped positioning box. A connecting buffer cylinder is elastically connected to the top of the U-shaped positioning box. The top of the connecting buffer cylinder is connected to the lower side of the head end of the automatic telescopic bracket through an electric telescopic rod. Under the drive of the electric telescopic rod, the contact pressure of the U-shaped positioning box on the overhead cable is adjusted to simulate the lowest position of the overhead cable when it is subjected to downward pressure; Among them, the adaptive mounting base is pre-installed on the overhead cable support frame, and then the automatic telescopic bracket is controlled to move along the length direction of the overhead cable. At the same time, the U-shaped positioning box slides elastically on the overhead cable to apply downward pressure to the overhead cable to keep it at a low height that it can almost bear, and cooperate with the laser rangefinder to measure the vertical safety line distance. At the same time, during the continuous extension of the automatic telescopic bracket, the adaptive reinforcement is controlled to continuously contact the overhead cable support frame, and the installation stability between the fixing mechanism and the overhead cable support frame is gradually improved, thereby realizing the automation, stability, and high-precision safety line distance measurement of the overhead cables of the power engineering project by this device.

[0010] Compared with the prior art, the invention has the following beneficial effects: by adopting the automatic extension and movement mode of the automatic telescopic bracket, the safety line distance measuring component at the end is controlled to move and measure along the length direction of the overhead cable, and at the same time, the safety line distance measuring component is elastically connected to the cable for sliding, so as to keep the pressure measurement within the safety range on the cable, and ensure that the measured safety vertical line distance is the most accurate value under any condition; By fully converting the kinetic energy of the automatic telescopic bracket when it is extended, the extended length of the automatic telescopic bracket and the stability of the installation between the adaptive mounting base and the overhead cable are designed to change synchronously, ensuring the smooth operation of the automatic telescopic bracket and the safety line distance measurement component without adding additional power. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of a device for measuring the safe line distance of overhead cables in power engineering; Figure 2 This is a schematic diagram of the main structure of a device for measuring the safe line distance of overhead cables in power engineering; Figure 3 It is a side view structural schematic diagram of a device for measuring the safe line distance of overhead cables in power engineering; Figure 4 It is a partial structural schematic diagram of an adaptive mounting base in a device for measuring the safe line distance of overhead cables in a power engineering project; Figure 5 It is a partial structural schematic diagram of a line distance measurement component in a safe line distance measurement device for overhead cables in an electric power engineering project; Figure 6 for Figure 1 A is a schematic diagram of the enlarged structure of the middle part; Figure 7 for Figure 4 A schematic diagram of the enlarged structure of B; Figure 8 for Figure 1 Schematic diagram of the enlarged structure of C in the figure.

[0012] Wherein: adaptive mounting base 10, automatic telescopic bracket 11, safety line distance measuring assembly 12, electric telescopic rod 14, connecting buffer cylinder 15, U-shaped positioning box 16, laser rangefinder 17, pulley 18, pressure sensor 19, buffer rod 20, limit block 21, buffer spring 22, telescopic bracket tail ring 23, telescopic bracket head ring 24, telescopic bracket middle ring 25, fixed mounting splint 26, movable mounting splint 27, threaded hole 28, fixing bolt 29, locking nut 30, hydraulic cylinder 31, end plate 32, swing connecting block 33, hydraulic rod 34, top swing rod I 35, top swing rod II 36, swing connecting shaft 37, U-shaped connecting rod 38, collar 39, U-shaped connecting block 40, connecting column 41, connecting rod 42, active tooth 43, driven tooth rod 44, movable plate 45, T-shaped slide bar 46, T-shaped slide groove 47, reinforcement plate 48, corrugated strip 49, gear shaft 50. DETAILED DESCRIPTION

[0013] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0014] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0017] See also Figure 1-Figure 5, a device for measuring the safe line distance of an overhead cable in an electric power engineering project, comprising an adaptive mounting base 10, an automatic telescopic bracket 11, and a safe line distance measuring component 12; the automatic telescopic bracket 11 is arranged between the adaptive mounting base 10 and the safe line distance measuring component 12, the adaptive mounting base 10 is detachably mounted on the overhead cable support frame and follows the extension and extension of the automatic telescopic bracket 11 to synchronously adjust the installation force of the overhead cable support frame (as the center of gravity between the adaptive mounting base 10, the automatic telescopic bracket 11, and the safe line distance measuring component 12 will continuously move away from the adaptive mounting base 10 as the automatic telescopic bracket 11 continues to extend, and at this time, the support force demand for the adaptive mounting base 10 will continuously increase), the automatic telescopic bracket 11 moves along the length direction of the overhead cable, and adjusts the lateral position of the safe line distance measuring component 12, so as to realize the automatic mobile measurement of the vertical safe line distance of the overhead cable; The adaptive mounting base 10 includes a fixing mechanism clamped and mounted on the overhead cable support frame, and an adaptive reinforcement piece is arranged on one side of the fixing mechanism facing the automatic telescopic bracket 11, and the adaptive reinforcement piece is rotatably connected with the driving end of the automatic telescopic bracket 11. The driving end of the automatic telescopic bracket 11 drives the automatic telescopic bracket 11 to drive the safety line distance measurement component 12 to extend outward, and controls the adaptive reinforcement piece to gradually contact the overhead cable support frame, cooperate with the fixing mechanism, and gradually increase the installation strength of the adaptive mounting base 10 and the overhead cable support frame; The safety line distance measuring assembly 12 includes an adaptive measuring unit installed in a lifting manner at the lower side of the head end of the automatic telescopic bracket 11. The adaptive measuring unit is in elastic sliding contact with the overhead cable. Under the extension and retraction of the automatic telescopic bracket 11, the adaptive measuring unit is controlled to move along the length direction of the overhead cable, and at the same time, downward pressure is applied to the overhead cable to simulate the vertical position height under the maximum force, and the height from the ground obstacle at this time (vertical safety line distance) is measured. The adaptive measuring unit includes a U-shaped positioning box 16 in sliding contact with the overhead cable. Laser rangefinders 17 for measuring the vertical safety line distance are installed on both sides of the U-shaped positioning box 16. A connecting buffer cylinder 15 is elastically connected to the top of the U-shaped positioning box 16. The top of the connecting buffer cylinder 15 is connected to the lower side of the head end of the automatic telescopic bracket 11 through an electric telescopic rod 14. Under the drive of the electric telescopic rod 14, the contact pressure of the U-shaped positioning box 16 on the overhead cable is adjusted to simulate the lowest position of the overhead cable when it is subjected to downward pressure. Among them, the adaptive mounting base 10 is pre-installed on the overhead cable support frame, and then the automatic telescopic bracket 11 is controlled to move along the length direction of the overhead cable. At the same time, the U-shaped positioning box 16 slides elastically on the overhead cable to apply downward pressure to the overhead cable to keep it at a low height that it can almost bear, and cooperate with the laser rangefinder 17 to measure the vertical safety line distance. At the same time, the automatic telescopic bracket 11 is continuously extended, and the adaptive reinforcement is controlled to continuously contact the overhead cable support frame, gradually improving the installation stability between the fixing mechanism and the overhead cable support frame, thereby realizing the automation, stability, and high-precision safety line distance measurement of the overhead cables of the power engineering project by this device.

[0018] In the embodiment of the present invention, a control box is installed at the head end of the automatic telescopic bracket 11, and the control box has a built-in wireless transceiver module, and its wireless communication is connected to a remote control terminal (mobile phone, computer, etc.). The electrical components in the adaptive mounting base 10, the automatic telescopic bracket 11, and the safety line distance measurement component 12 are all electrically connected to the control box, which ensures that the operator can directly control the operation of the above components remotely, that is, increase the degree of automation; Among them, the connection and operation between the control box and the adaptive mounting base 10, the automatic telescopic bracket 11, and the electrical components in the safety line distance measurement component 12 can all be achieved with the help of existing technologies, and will not be described in detail here; A plurality of pulleys 18 rolling along the length direction of the overhead cable are evenly installed on the inner side of the U-shaped positioning box 16. A pressure sensor 19 for real-time detection of the contact force of the overhead cable is arranged on the outer surface of the pulley 18. That is, the pressure of the overhead cable is monitored in real time by the pressure sensor 19, and then cooperated with the electric telescopic rod 14 to ensure that the position adjustment of the overhead cable is controlled under safe force. At the same time, under the elastic action of the U-shaped positioning box 16 and the connecting buffer cylinder 15, the safety protection of the overhead cable is further improved; Specifically, a buffer rod 20 is installed at the middle of the top of the U-shaped positioning box 16, the top of the buffer rod 20 extends to the inside of the connecting buffer tube 15 and is installed with a limit block 21, the area of ​​the limit block 21 is larger than the bottom opening of the connecting buffer tube 15, and the top of the limit block 21 is elastically connected to the top of the connecting buffer tube 15 through a plurality of buffer springs 22, that is, under the elastic action of the buffer spring 22, the elastic design between the U-shaped positioning box 16 and the electric telescopic rod 14 is maintained; Ground obstacles generally refer to trees, buildings, raised land, etc. By measuring the height of the overhead cables from the ground when they are at their lowest position, it can be ensured that the overhead cables remain at a safe distance from the ground when encountering rain, snow, or birds exerting pressure on them.

[0019] In one embodiment of the present invention, the fixing mechanism includes two groups of parallelly distributed fixed installation clamps 26 and movable installation clamps 27, both of which are provided with rectangular frame structures, and the movable installation clamps 27 move toward the fixed installation clamps 26 and are clamped at a suitable position of the overhead cable support frame to be installed, and threaded holes 28 are provided at the corresponding positions of the four corners of the fixed installation clamps 26 and the movable installation clamps 27, and the threaded holes 28 are internally threadedly connected with fixing bolts 29, and the fixing bolts 29 are rotated to adjust the position of the movable installation clamps 27 away from the fixed installation clamps 26, so as to clamp and fix, and at the same time, a locking nut 30 is threadedly connected to the side of the fixing bolts 29 away from the movable installation clamps 27, that is, under the action of the locking nut 30, the tightening force of the fixing bolts 29 is increased; As a preferred embodiment of the present invention, the automatic telescopic bracket 11 includes a telescopic bracket head ring 24 located at the head end, a telescopic bracket tail ring 23 at the tail end, and a plurality of groups of telescopic bracket middle rings 25 equidistantly distributed and movable between the telescopic bracket tail ring 23 and the telescopic bracket head ring 24. The telescopic bracket tail ring 23, the telescopic bracket head ring 24, and the telescopic bracket middle ring 25 have the same structure and are all set as a rectangular frame structure. Adjacent telescopic bracket tail rings 23 and telescopic bracket middle rings 25, telescopic bracket middle rings 25 and telescopic bracket middle rings 25, and telescopic bracket middle rings 25 and telescopic bracket head rings 24 are movably connected by swing connectors on adjacent top sides and sidewall lower sides. The distance between adjacent telescopic bracket tail rings 23, telescopic bracket middle rings 25, and telescopic bracket head rings 24 is adjusted by extending the swing connector. The safety line distance measurement component 12 is installed on the telescopic bracket head ring 24 to realize automatic position adjustment of the safety line distance measurement component 12. The driving end of the automatic telescopic support 11 includes a hydraulic cylinder 31 rotatably arranged on the telescopic support tail ring 23, and the output end of the hydraulic cylinder 31 is connected to a hydraulic rod 34. The end of the hydraulic rod 34 is rotatably connected to the swing connection between the adjacent telescopic support tail ring 23 and the top of the telescopic support middle ring 25. The telescopic support tail ring 23 is fixedly installed on the fixed installation clamping plate 26 on the side away from the telescopic support head ring 24. That is, by starting the hydraulic cylinder 31 to control the hydraulic rod 34 to extend, the swing connection of the corresponding end is driven to rotate, and the telescopic support middle ring 25 at the end is controlled to move synchronously. Then, with the support of the swing connection between the adjacent telescopic support tail ring 23, the telescopic support head ring 24, and the telescopic support middle ring 25 located at the lower part of the side wall, the telescopic support middle ring 25 and the telescopic support head ring 24 are controlled to extend synchronously along the length of the overhead cable, thereby achieving the purpose of automatic movement. For details, see Figure 6The end of the hydraulic cylinder 31 is provided with an end plate 32, and a swing connection block 33 is provided on the side of the end plate 32 away from the hydraulic cylinder 31. The swing connection block 33 is rotatably connected to the telescopic bracket tail ring 23 through a rotating shaft, and the end of the hydraulic rod 34 is rotatably connected to the swing connection piece through a rotating shaft, that is, when the hydraulic cylinder 31 is in operation to control the extension and retraction of the hydraulic rod 34, while controlling the extension of the swing connection piece, the swing connection block 33 at its tail end will also synchronously rotate within a certain angle to ensure that the swing connection piece can be controlled to extend stably and smoothly. At this time, the extension form is: when the hydraulic rod 34 is extended, the swing connection piece is controlled to extend synchronously, thereby controlling the extension of the telescopic bracket middle ring 25 and the telescopic bracket first ring 24. At the same time, the swing connection block 33 swings outward, and the bottom of the swing connection block 33 moves through the telescopic bracket tail ring 23 to connect with the adaptive reinforcement piece, that is, the adaptive reinforcement piece is synchronously driven to increase the installation degree between the overhead cable support frame.

[0020] As a preferred embodiment of the present invention, refer to Figure 8 The swing connectors located at the top and sides between the telescopic bracket tail ring 23 and the telescopic bracket middle ring 25, the telescopic bracket middle ring 25 and the telescopic bracket middle ring 25, and the telescopic bracket middle ring 25 and the telescopic bracket first ring 24 are all of the same structure. The swing connector located between the telescopic bracket middle ring 25 and the top of the telescopic bracket middle ring 25 is used as an example for explanation. The swing connector includes a top swing rod I 35 and a top swing rod II 36. The ends of the top swing rod I 35 and the top swing rod II 36 that are away from each other are rotatably connected to a bracket installed on the telescopic bracket. The connecting column 41 at the top of the middle ring 25, the ends of the top swing rod I 35 and the top swing rod II 36 close to each other are respectively installed with a U-shaped connecting rod 38 and a collar 39, the collar 39 is placed in the middle of the U-shaped connecting rod 38, and a swing connecting shaft 37 is installed together. Under the rotation connection of the swing connecting shaft 37, the U-shaped connecting rod 38, and the collar 39, the top swing rod I 35 and the top swing rod II 36 on both sides are kept in swing connection with each other, and under the connection of the connecting column 41, the rotational relative movement between the middle rings 25 of the adjacent telescopic brackets is controlled; Similarly, the swing connectors between the top and sides of the telescopic bracket tail ring 23 and the telescopic bracket middle ring 25, and between the telescopic bracket middle ring 25 and the telescopic bracket head ring 24 are also connected in the same way, which will not be described in detail here.

[0021] As a preferred embodiment of the present invention, the end of the hydraulic rod 34 is rotatably connected to a U-shaped connecting block 40 installed on the side wall of the top swing rod I35 through a rotating shaft. The U-shaped connecting block 40 is distributed on the side wall of the top swing rod I35 close to the side of the telescopic bracket tail ring 23, ensuring that when the hydraulic rod 34 is extended, the top swing rod I35 and the top swing rod II36 can be smoothly and fully controlled to swing and move.

[0022] As a preferred embodiment of the present invention, refer to Figure 1 , Figure 7The adaptive reinforcement includes a connecting rod 42 connected to the bottom of the swing connection block 33, and a driving tooth 43 is installed at the bottom end of the connecting rod 42. A driven tooth bar 44 is meshed with one side of the driving tooth 43. The upper and lower ends of the driven tooth bar 44 are rotatably connected to the upper and lower walls inside the telescopic bracket tail ring 23 through a gear shaft 50. A group of moving plates 45 are slidably connected to the inner wall of the telescopic bracket tail ring 23 on one side of the driven tooth bar 44. A rack is provided on the side of the moving plate 45 facing the driven tooth bar 44, and the rack is meshed with the driven tooth bar 44. The side of the moving plate 45 facing the moving installation clamping plate 27 is A plurality of transversely distributed reinforcement plates 48 are evenly installed, and the reinforcement plates 48 move along the middle of the fixed installation clamping plate 26. When the hydraulic rod 34 is extended, the swing connection block 33 is controlled to rotate counterclockwise, and the connection rod 42 is controlled to rotate counterclockwise, and then the driven gear rod 44 is driven to rotate clockwise, and then the rack is driven to control the moving plate 45 to move toward the moving installation clamping plate 27, and then the reinforcement plate 48 is controlled to contact with the overhead cable support frame. As the hydraulic cylinder 31 swings outward, the contact force between the reinforcement plate 48 and the support frame is gradually increased, so as to achieve an adaptive reinforcement installation effect; The side of the reinforcement plate 48 that contacts the overhead cable support frame is provided with a corrugated strip 49 to increase the friction between the two when they are in contact; Specifically, a plurality of T-shaped slide bars 46 are evenly installed on one side of the movable plate 45 opposite to the rack, and a T-shaped slide bar 46 is provided with a T-shaped slide groove 47 on the inner wall of the telescopic bracket tail ring 23 corresponding to the T-shaped slide bar 46. The T-shaped slide bar 46 slides along the T-shaped slide groove 47 to maintain the stability of the movable plate 45 when moving.

[0023] The working principle of the present invention is: in the idle position of the device, all the driving parts mentioned above, which refer to the power elements, electrical components and the adapted power supply, are connected through wires, and the electrical connection is completed in a sequential working order between the electrical components. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and does not explain the electrical control. Before measurement, it is pre-clamped and installed on the overhead cable support frame by the fixed installation clamping plate 26 and the movable installation clamping plate 27 to maintain the initial stability of the safety line distance measurement component 12, and then the electric telescopic rod 14 is remotely controlled to descend, and the U-shaped positioning box 16 at the bottom is mounted on the outside of the cable. At the same time, the pressure sensor 19 is used to perform real-time pressure detection, and then the hydraulic cylinder 31 is started to drive the hydraulic rod 34 to move. It stretches continuously, and under the action of the swing connector, the telescopic bracket middle ring 25 and the telescopic bracket first ring 24 are gradually and slowly controlled to extend along the overhead cable. At the same time, the pulley 18 on the inner side of the U-shaped positioning box 16 slides along the cable, and the laser rangefinder 17 on the outer side of the U-shaped positioning box 16 performs real-time vertical safety line distance measurement to ensure that the height of the cable is measured at the minimum safety line distance. When the hydraulic rod 34 is continuously extended, the swing connection block 33 at its tail end is controlled to rotate continuously, which drives the connecting rod 42 to rotate, and then the active tooth 43 is used to engage with the driven gear rod 44 and the rack to control the reinforcement plate 48 at the end of the movable plate 45 to continuously move toward the overhead cable support frame, thereby adjusting the installation stability of the adaptive mounting base 10 as a whole and the support frame.

[0024] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A device for measuring safe line distance of overhead cables in power engineering, characterized in that: The invention comprises an adaptive mounting base (10), an automatic telescopic bracket (11), and a safety line distance measuring assembly (12); the automatic telescopic bracket (11) is arranged between the adaptive mounting base (10) and the safety line distance measuring assembly (12); the adaptive mounting base (10) is detachably mounted on an overhead cable support frame and follows the extension and retraction of the automatic telescopic bracket (11) to synchronously adjust the installation force of the overhead cable support frame; The adaptive mounting base (10) comprises a fixing mechanism clamped and mounted on an overhead cable support frame, an adaptive reinforcement piece is arranged on a side of the fixing mechanism facing the automatic telescopic support (11), the adaptive reinforcement piece is rotatably connected to a driving end of the automatic telescopic support (11), and the driving end of the automatic telescopic support (11) drives the automatic telescopic support (11) to drive the safety line distance measurement component (12) to extend outward, while controlling the adaptive reinforcement piece to gradually contact the overhead cable support frame; The safety line distance measurement assembly (12) comprises an adaptive measuring unit installed in a lifting manner at the lower side of the head end of the automatic telescopic bracket (11); the adaptive measuring unit is in elastic sliding contact with the overhead cable; when the automatic telescopic bracket (11) is extended or retracted, the adaptive measuring unit is controlled to move along the length direction of the overhead cable, exerting downward pressure on the overhead cable to simulate the vertical position height under maximum force; the adaptive measuring unit comprises a U-shaped positioning box (16) in sliding contact with the overhead cable; laser distance meters (17) for measuring vertical safety line distances are installed on both sides of the U-shaped positioning box (16); a connecting buffer cylinder (15) is elastically connected to the top of the U-shaped positioning box (16); and the top of the connecting buffer cylinder (15) is connected to the lower side of the head end of the automatic telescopic bracket (11) via an electric telescopic rod (14).

2. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 1, characterized in that: A control box is installed at the front end of the automatic telescopic bracket (11), the control box has a built-in wireless transceiver module, and the wireless communication is connected to a remote control terminal. The electrical components in the adaptive mounting base (10), the automatic telescopic bracket (11), and the safety line distance measurement component (12) are all electrically connected to the control box.

3. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 2, characterized in that: A plurality of groups of pulleys (18) rolling along the length direction of the overhead cable are evenly mounted on the inner side of the U-shaped positioning box (16), and pressure sensors (19) for real-time detection of contact force with the overhead cable are arranged on the outer surface of the pulleys (18).

4. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 3, characterized in that: A buffer rod (20) is installed at the middle of the top of the U-shaped positioning box (16); the top of the buffer rod (20) extends into the interior of the connecting buffer cylinder (15) and is installed with a limit block (21); the area of ​​the limit block (21) is larger than the bottom opening of the connecting buffer cylinder (15); the top of the limit block (21) is elastically connected to the top of the connecting buffer cylinder (15) via a plurality of buffer springs (22).

5. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 4, characterized in that: The fixing mechanism comprises two groups of parallelly distributed fixed mounting clamps (26) and movable mounting clamps (27), the fixed mounting clamps (26) and movable mounting clamps (27) are both provided with a rectangular frame structure, the movable mounting clamps (27) move towards the fixed mounting clamps (26), threaded holes (28) are provided at corresponding positions of the four corners of the fixed mounting clamps (26) and the movable mounting clamps (27), the threaded holes (28) are internally threadedly connected with fixing bolts (29), and the fixing bolts (29) are threadedly connected with a locking nut (30) on a side away from the movable mounting clamps (27).

6. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 5, characterized in that: The automatic telescopic support (11) comprises a telescopic support head ring (24) located at the head end, a telescopic support tail ring (23) at the tail end, and a plurality of groups of telescopic support middle rings (25) movably arranged between the telescopic support tail ring (23) and the telescopic support head ring (24) and equidistantly movably distributed. The telescopic support tail ring (23), the telescopic support head ring (24), and the telescopic support middle ring (25) have the same structure and are all arranged as a rectangular frame structure. The adjacent telescopic support tail rings (23) and telescopic support middle rings (25), the telescopic support middle rings (25) and the telescopic support middle rings (25), and the telescopic support middle rings (25) and the telescopic support head rings (24) are movably connected at the adjacent top side and the side of the lower part of the side wall by swing connectors.

7. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 6, characterized in that: The driving end of the automatic telescopic support (11) comprises a hydraulic cylinder (31) rotatably arranged on the telescopic support tail ring (23); the output end of the hydraulic cylinder (31) is connected to a hydraulic rod (34); the end of the hydraulic rod (34) is rotatably connected to a swing connection piece between the adjacent telescopic support tail ring (23) and the top of the telescopic support middle ring (25); the side of the telescopic support tail ring (23) away from the telescopic support head ring (24) is fixedly mounted on a fixed mounting clamp (26); the tail end of the hydraulic cylinder (31) is mounted with an end plate (32); the side of the end plate (32) away from the hydraulic cylinder (31) is mounted with a swing connection block (33); the swing connection block (33) is rotatably connected to the telescopic support tail ring (23) via a rotating shaft; the end of the hydraulic rod (34) is rotatably connected to the swing connection piece via a rotating shaft.

8. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 7, characterized in that: The swing connectors located at the top and sides between the telescopic bracket tail ring (23) and the telescopic bracket middle ring (25), between the telescopic bracket middle ring (25) and the telescopic bracket middle ring (25), and between the telescopic bracket middle ring (25) and the telescopic bracket head ring (24) are all of the same structure. The swing connector located between the telescopic bracket middle ring (25) and the top of the telescopic bracket middle ring (25) is described as an example. The swing connector includes a top swing rod I (35) and a top swing rod II (36). The ends of the top swing rod I (35) and the top swing rod II (36) that are away from each other are rotatably connected to a connecting column (41) installed at the top of the telescopic bracket middle ring (25). The ends of the top swing rod I (35) and the top swing rod II (36) that are close to each other are respectively installed with a U-shaped connecting rod (38) and a collar (39). The collar (39) is placed in the middle of the U-shaped connecting rod (38) and is jointly covered with a swing connecting shaft (37).

9. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 8, characterized in that: The end of the hydraulic rod (34) is rotatably connected to a U-shaped connection block (40) mounted on the side wall of the top swing rod I (35) via a rotating shaft. The U-shaped connection block (40) is distributed at a position on the side wall of the top swing rod I (35) close to one side of the telescopic bracket tail ring (23).

10. The device for measuring safe line distance of overhead cables in electric power engineering according to claim 9, characterized in that: The adaptive reinforcement member comprises a connecting rod (42) connected to the bottom of the swing connection block (33), a driving tooth (43) is installed at the bottom end of the connecting rod (42), a driven tooth bar (44) is meshed with one side of the driving tooth (43), the upper and lower ends of the driven tooth bar (44) are rotatably connected to the upper and lower inner walls of the telescopic bracket tail ring (23) through a gear shaft (50), a group of moving plates (45) are slidably connected to the inner wall of the telescopic bracket tail ring (23) on one side of the driven tooth bar (44), a rack is provided on the side of the moving plate (45) facing the driven tooth bar (44), the rack meshes with the driven tooth bar (44), a plurality of transversely distributed reinforcement plates (48) are evenly installed on the side of the moving plate (45) facing the moving installation clamping plate (27), and the reinforcement plates (48) move along the middle of the fixed installation clamping plate (26); A plurality of T-shaped slide bars (46) are evenly mounted on one side of the movable plate (45) opposite to the rack, and a T-shaped slide groove (47) is formed on the inner wall of the T-shaped slide bar (46) corresponding to the telescopic bracket tail ring (23), and the T-shaped slide bar (46) slides along the T-shaped slide groove (47).

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