External force damage prevention device and method for electric power circuit

Abstract

The invention belongs to the technical field of power lines, and discloses a power line external force damage prevention device and method.The power line external force damage prevention device comprises a lifting mechanism and a detection assembly, a shell is installed on a tower, a driving motor is arranged in the shell, the output end of the driving motor is connected to a rotating part, and the rotating part is rotationally arranged in the shell; one end of the rope piece is connected to the rotating piece, the other end of the rope piece is connected to the fixing piece, the inductor is electrically connected with the control circuit board, the fixing piece clamps the wire, and when the inductor detects that foreign matter is located in a warning area, the control circuit board controls the driving motor to be turned on, the rotating piece winds the rope piece, and the rope piece pulls the wire to enable the wire to rise relative to the ground. The electric wire is gradually away from foreign matters, the electric wire is timely lifted when the foreign matters approach the construction machinery and an electric shock accident occurs, so that the probability of electric wire accidents is reduced, a traditional external force damage prevention means for manually monitoring a construction point is optimized, and manpower resources are greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power lines, and in particular to a device and method for preventing power lines from being damaged by external forces. Background Art

[0002] Power lines refer to the lines used to transmit electric energy between power plants, substations and power users. With the continuous expansion of urban construction, various large-scale construction machinery and equipment are widely used in power facility protection areas. Pole towers are installed in many locations, over a wide area and over long distances. Severe weather changes not only threaten the safe and reliable operation of equipment, but are often severely damaged by external forces, such as large work vehicles working under overhead lines, large vehicles or over-height vehicles forcibly passing under overhead lines, and demolition and construction of buildings exceeding the safe distance allowed by high voltage.

[0003] In order to solve the above problems, the existing anti-external force damage measures are mainly divided into two types: one is to set up line guards to promptly discover external damage defects by setting up special personnel to watch on site. This method is expensive and inefficient; the other is to achieve all-day monitoring through remote visual monitoring. This method has blind spots, occupies more human resources and has the problem of construction hazards due to human negligence.

[0004] Therefore, there is an urgent need for a device and method for preventing power lines from being damaged by external forces to solve the above problems. Summary of the invention

[0005] According to one aspect of the present invention, a device for preventing power lines from being damaged by external forces is provided, which enables the electric wires to be raised in time when foreign objects approach construction machinery or when an electric shock accident occurs, thereby reducing the probability of circuit accidents. In addition, the traditional means of preventing power lines from being damaged by external forces by manual monitoring of construction sites is optimized, thereby greatly reducing human resources.

[0006] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A device for preventing power lines from being damaged by external forces, comprising:

[0008] A lifting mechanism, the lifting mechanism comprising a housing, a driving motor, a rotating member, a rope member and a fixing member, the housing being mounted on a pole tower, the driving motor being arranged on the housing, the output end of the driving motor being connected to the rotating member, the rotating member being rotatably arranged in the housing, one end of the rope member being connected to the rotating member, the other end of the rope member being connected to the fixing member, the fixing member being used to clamp the wire;

[0009] A detection component, the detection component includes a sensor and a control circuit board electrically connected to the sensor, the sensor is installed below the pulling mechanism, the sensor is used to detect whether there are foreign objects in the warning area of ​​the wire, and the control circuit board is used to control the drive motor to turn on or off.

[0010] Preferably, the power line protection device also includes a telescopic component, a fixed end of the telescopic component is arranged on the shell, and a telescopic end of the telescopic component is connected to the sensor. The sensor is telescoped relative to the shell under the action of the telescopic component to adjust the height of the warning area of ​​the electric wire.

[0011] Preferably, the telescopic assembly includes a linear drive source and a connecting rod, the linear drive source is installed at the bottom of the shell, the output end of the linear drive source is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the sensor.

[0012] Preferably, the power line protection device against external force damage further comprises a fixed support, the fixed support is arranged on the shell, and the fixed support is installed on the cross arm of the tower.

[0013] Preferably, the power line protection device against external force damage further comprises a connecting piece, the fixed support is provided with a connecting hole, the cross arm of the tower is provided with a mounting hole, and the connecting piece passes through the connecting hole and is fixedly connected to the mounting hole.

[0014] Preferably, the power line protection device against external force damage further comprises an alarm, the alarm is arranged on the housing, and the alarm is electrically connected to the control circuit board.

[0015] Preferably, the power line protection device against external force damage also includes a short circuit detector, which is arranged on the fixing member and is electrically connected to the control circuit board, and is used to detect whether the wire is short-circuited.

[0016] According to another aspect of the present invention, a method for preventing a power line from being damaged by external forces is provided. By implementing the above-mentioned device for preventing a power line from being damaged by external forces, the method for preventing a power line from being damaged by external forces comprises:

[0017] S100: The sensor detects in real time whether there is any foreign object in the warning area below the wire;

[0018] S200: When the sensor detects that a foreign object is in the warning area below the electric wire, the control circuit board controls the drive motor to turn on, and the drive motor drives the rotating member to retract the rope member, and the rope member pulls up the electric wire, and the electric wire is away from the foreign object;

[0019] S300: When the sensor detects that the foreign object is not in the warning area below the wire, the control circuit board controls the drive motor to turn off, the rotating member stops retracting the rope member, and the wire remains stationary.

[0020] Preferably, the power line protection device against external force damage further comprises a telescopic component, the fixed end of the telescopic component is arranged on the housing, the telescopic end of the telescopic component is connected to the sensor, and the sensor is telescoped relative to the housing under the action of the telescopic component to adjust the height of the warning area of ​​the wire;

[0021] The method for preventing power lines from being damaged by external forces further includes, before S100:

[0022] S10: Based on a preset warning height, under the action of the telescopic component, the sensor is adjusted in height relative to the housing to adjust the height of the sensing area of ​​the sensor under the wire.

[0023] Preferably, the power line protection device against external force damage further comprises a short circuit detector, which is arranged on the fixing member and is electrically connected to the control circuit board, and is used to detect whether the electric wire is short-circuited;

[0024] The method for preventing power lines from being damaged by external forces further includes, after S10:

[0025] S20: the short circuit detector detects in real time whether the electric wire is short-circuited;

[0026] S30: When the short-circuit detector detects that the electric wire is short-circuited, the control circuit board controls the driving motor to turn on, and the driving motor drives the rotating member to retract the rope member, and the rope member pulls up the electric wire.

[0027] The beneficial effects of the present invention are:

[0028] The present invention provides a device for preventing power lines from being damaged by external forces. The lifting mechanism includes a shell, a driving motor, a rotating member, a rope and a fixing member. The shell is installed on a pole tower. The driving motor is arranged on the shell. The output end of the driving motor is connected to the rotating member. The rotating member is rotatably arranged in the shell. One end of the rope is connected to the rotating member, and the other end of the rope is connected to the fixing member. The detection component includes a sensor and a control circuit board electrically connected to the sensor. The sensor is installed below the lifting mechanism. The sensor is used to detect whether there are foreign objects in the warning area of ​​the wire. The fixing member clamps the end of the wire close to the pole tower. The rope is in a tensioned state. The sensor detects in real time whether there are foreign objects in the warning area below the wire. When the sensor detects that the foreign objects are in the warning area, the control circuit board controls the driving motor to open, the rotating member rotates relative to the shell and reels one end of the rope, and the other end of the rope pulls the wire to raise the wire relative to the ground, so that the wire gradually moves away from the foreign objects. Finally, when the sensor does not detect foreign objects in the warning area under the wire, the control circuit board controls the drive motor to shut down, the rotating parts stop retracting the rope parts, and the wires remain stationary. The wires are raised in time when foreign objects approach the construction machinery and electric shock accidents occur, thereby reducing the probability of circuit accidents, shortening the time for power restoration, and avoiding the purpose of external force damage to the wires. In addition, the traditional means of preventing external force damage at the construction site under manual monitoring are optimized, which greatly reduces human resources and avoids wire tripping due to human negligence.

[0029] The present invention provides a method for preventing power lines from being damaged by external forces. Through the implementation of a device for preventing power lines from being damaged by external forces, a sensor detects in real time whether there are foreign objects in the warning area below the wires. When the sensor detects that the foreign objects are in the warning area below the wires, the control circuit board controls the drive motor to turn on, and the drive motor drives the rotating part to retract the rope, and the rope pulls the wires away from the foreign objects. When the sensor detects that the foreign objects are not in the warning area below the wires, the control circuit board controls the drive motor to turn off, and the rotating part stops retracting the rope, and the wires remain stationary. The wires are lifted in time when foreign objects approach construction machinery and electric shock accidents occur, thereby reducing the probability of wire accidents and avoiding the purpose of wire damage by external forces. In addition, human resources are greatly reduced to avoid wire tripping due to human negligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A front view of a device for preventing external force damage to a power line provided by an embodiment of the present invention;

[0031] Figure 2 A side view of a device for preventing external force damage to a power line provided by an embodiment of the present invention;

[0032] Figure 3 A top view of a device for preventing external force damage to a power line provided by an embodiment of the present invention;

[0033] Figure 4 An axonometric diagram of a device for preventing external force damage to a power line provided by an embodiment of the present invention;

[0034] Figure 5 A flow chart of a method for protecting a power line from external force damage provided by an embodiment of the present invention.

[0035] Reference numerals:

[0036] 100. Electric wire; 1. Shell; 2. Driving motor; 3. Rope; 4. Fixing part; 5. Sensor; 6. Linear driving source; 7. Connecting rod; 8. Fixed support; 9. Short circuit detector. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] Embodiment 1

[0042] like Figure 1-Figure 4 As shown, the device for preventing external force damage to power lines includes a lifting mechanism and a detection component. The lifting mechanism includes a housing 1, a driving motor 2, a rotating member, a rope 3 and a fixing member 4. The housing 1 is installed on the pole tower, the driving motor 2 is arranged on the housing 1, the output end of the driving motor 2 is connected to the rotating member, the rotating member is rotatably arranged in the housing 1, one end of the rope 3 is connected to the rotating member, and the other end of the rope 3 is connected to the fixing member 4, and the fixing member 4 is used to clamp the wire 100. The detection component includes a sensor 5 and a control circuit board electrically connected to the sensor 5. The sensor 5 is installed below the lifting mechanism. The sensor 5 is used to detect whether there is a foreign object in the warning area of ​​the wire 100, and the control circuit board is used to control the driving motor 2 to open or close. Specifically, the device is insulated from the pole tower as a whole, the wire 100 is erected above the ground through the adjacent pole tower, the housing 1 is fixedly installed on the cross arm of the pole tower by bolts, the rope 3 is set as an insulating chain lock, and the rotating member is set as a rotating roller. The rotating member is located in the housing 1, and the two ends of the rotating member are rotatably arranged on the inner walls of the housing 1 on both sides. A rope 3 is wound around the rotating member, and the rope 3 is connected to the fixing member 4. The fixing member 4 is set as a wire clamp. Along the length direction of the wire 100, the fixing member 4 is semi-enclosed to clamp the wire 100. The output end of the driving motor 2 is connected to the shaft end of the rotating member and is used to drive the rotating member to rotate in the housing 1 to release or reel in the rope 3. The sensor 5 is set as an obstacle sensing sensor, which is a device that can detect and identify obstacles and is widely used in various automation and intelligent control systems, such as reflective photoelectric switches, ultrasonic sensors, infrared sensors, laser sensors, visual sensors, etc. The sensor 5 is used to detect whether foreign objects such as crane construction machinery exceed the preset warning area. The setting of the warning area is specifically: the detection area of ​​the sensor 5 below the wire 100 is the warning area, and the sensor 5 can be triggered as soon as the foreign object reaches the lower limit of the warning area. The height of the lower limit of the warning area from the ground is set as the warning height. The control circuit board is installed in the shell 1 and is used to control the opening and closing of the drive motor 2.

[0043] The working process of the device for preventing power line from external force damage is as follows: First, the fixing member 4 clamps the end of the wire 100 close to the pole tower, and the rope member 3 is in a tensioned state, that is, the rope member 3 has a force effect on the fixing member 4 and the rotating member respectively. Based on the preset warning height, the sensor 5 is at a corresponding position below the housing 1, so that the sensing area of ​​the sensor 5 matches the warning area of ​​the wire 100. Then, the sensor 5 detects in real time whether there is a foreign object in the warning area below the wire 100. When the sensor 5 detects that the foreign object has just triggered the lower limit of the warning area, that is, the foreign object is in the warning area, the sensor 5 sends a high level to the control circuit board, and the control circuit board controls the drive motor 2 to turn on. Under the driving action of the drive motor 2, the rotating member rotates relative to the housing 1 and reels one end of the rope member 3, and the other end of the rope member 3 pulls the wire 100, so that the wire 100 rises relative to the ground, so that the wire 100 gradually moves away from the foreign object. Finally, when the sensor 5 does not detect that the foreign object is in the warning area below the wire 100, the sensor 5 sends a low level to the control circuit board, and the control circuit board controls the drive motor 2 to turn off, the rotating part stops rotating, and stops retracting the rope 3, and the wire 100 is stationary, so that the wire 100 is lifted in time when the foreign object of the construction machinery approaches and the electric shock accident occurs, increasing the probability of the relay protection device to act successfully, thereby reducing the probability of the wire 100 accident, shortening the power supply recovery time, and avoiding the wire 100 from being damaged by external forces. In addition, the traditional means of preventing external force damage in manual monitoring of the construction site are optimized, which greatly reduces human resources and avoids the tripping of the wire 100 caused by human negligence. The relay protection device is an automated device that directly sends a trip command to the controlled circuit breaker when a fault occurs in the power element or the power system itself, endangering the safe operation of the power system. When the foreign object approaches the wire, the wire can be lifted in time through the anti-external force damage device to ensure the normal operation of the relay protection device.

[0044] Further, continue to refer to Figure 1-Figure 4The device for preventing external force damage to power lines also includes a telescopic component, the fixed end of the telescopic component is arranged on the housing 1, and the telescopic end of the telescopic component is connected to the sensor 5. The sensor 5 is telescoped relative to the housing 1 under the action of the telescopic component to adjust the height of the warning area of ​​the wire 100. Specifically, the telescopic component includes a linear drive source 6 and a connecting rod 7. The linear drive source 6 is installed at the bottom of the housing 1, the output end of the linear drive source 6 is connected to one end of the connecting rod 7, and the other end of the connecting rod 7 is connected to the sensor 5. The linear drive source 6 is set as a linear motor or a direct-push motor. In this embodiment, the linear drive source 6 is set as a direct-push motor. The working principle of the direct-push motor is based on the action of the electromagnetic field. The polarity of the electromagnet is controlled by changing the direction of the current to generate thrust. The direct-push motor is mainly composed of a stator, a rotor, and a bearing. The stator is the fixed part of the motor, the rotor is the rotating part of the motor, and the bearing is used to support and protect the rotor. The rotor of the direct-push motor is usually a smooth shaft with an electromagnet or a permanent magnet installed on the shaft. The advantages of direct-push motors include simple structure, easy maintenance, high efficiency, large thrust, simple control and high reliability. Due to its large thrust and ability to meet high load requirements, direct-push motors are widely used in situations requiring high thrust, high speed and high precision. Based on the preset warning height, the direct-push motor can drive the connecting rod 7 to extend and retract, so that the sensor 5 can rise and fall relative to the housing 1 in the height direction, thereby adjusting the height of the warning area of ​​the wire 100, that is, the height of the lower limit of the detection area of ​​the sensor 5 below the wire 100 from the ground, thereby meeting the requirements of different power equipment for the surrounding environment.

[0045] Further, continue to refer to Figure 1-Figure 4 The device for preventing external force damage to power lines further comprises a fixed support 8, which is arranged on the housing 1 and mounted on the cross arm of the pole tower. Specifically, the fixed support 8 is a sheet metal structure, the connecting piece is a bolt, the fixed support 8 is provided with a connecting hole, the cross arm of the pole tower is provided with a mounting hole, the connecting piece passes through the connecting hole and is fixedly connected to the mounting hole, so that the lifting mechanism is fixedly mounted on the cross arm of the pole tower through the fixed support 8.

[0046] Further, continue to refer to Figure 1-Figure 4 The device for preventing external force from destroying the power line further includes an alarm, which is arranged on the housing 1 and is electrically connected to the control circuit board. Specifically, when the sensor 5 does not detect that the foreign object is in the warning area below the wire 100, the sensor 5 sends a low level to the control circuit board, and the control circuit board controls the alarm to be turned off, and the circuit is in a normal state. When the sensor 5 detects that the foreign object is in the warning area, the sensor 5 sends a high level to the control circuit board, and the control circuit board controls the alarm to be turned on, so as to remind the construction personnel and the monitoring personnel that the wire 100 will be interfered with and collided by the foreign object, and stop it in time.

[0047] Further, continue to refer to Figure 1-Figure 4 The power line anti-external force damage device also includes a short-circuit detector 9, which is arranged on the fixing member 4, and the short-circuit detector 9 is electrically connected to the control circuit board. The short-circuit detector 9 is used to detect whether the wire 100 is short-circuited. Specifically, the principle of the short-circuit detector 9 mainly includes three main steps: current measurement, voltage measurement and short-circuit judgment. The first is current measurement. The short-circuit detector 9 obtains the total current in the circuit by inserting a certain resistor in the circuit and measuring the current passing through the resistor. The current measurement can be achieved by methods such as inductive measurement, Hall effect or resistance measurement. The second is voltage measurement. A resistor for measuring voltage is added to the circuit, and the voltage passing through the resistor is measured to obtain the total voltage in the circuit. The voltage measurement can be measured by a voltmeter through the voltage divider principle. The third is short-circuit judgment. The measurement results of current and voltage are compared. If the measured current far exceeds the current value corresponding to the voltage, it can be judged that there is a short circuit problem in the circuit. The short circuit detector 9 gradually narrows the range of the short circuit position by changing the position of the test point, and finally determines the specific position where the short circuit occurs. The short circuit detector is widely used in electronic equipment manufacturing, the power industry, electrical engineering and other fields to detect short circuit problems in the circuit, so as to eliminate the fault in time and ensure the normal operation of the circuit. According to the Faraday electromagnetic induction principle, the short circuit detector 9 is set as a magnetic field induction device. When the short circuit detector 9 does not detect that the wire 100 is short-circuited, the short circuit detector 9 sends a low level to the control circuit board, and the control circuit board can control the pull-up mechanism to close. When the short circuit detector 9 detects that the wire 100 is short-circuited, the control circuit board can control the pull-up mechanism and the alarm to open, so that the wire 100 rises relative to the ground, and at the same time, the alarm sounds an alarm.

[0048] Embodiment 2

[0049] This embodiment provides a method for preventing power lines from being damaged by external forces. Figure 5 As shown, through the implementation of the above-mentioned power line protection device for preventing external force damage, the power line protection method for preventing external force damage includes:

[0050] S10: Based on the preset warning height, under the action of the telescopic assembly, the sensor 5 is adjusted in height relative to the housing 1 to adjust the height of the sensing area of ​​the sensor 5 below the wire 100 .

[0051] Since overhead power lines are built on various complex terrains such as plains, deserts, and hillsides through a number of poles, there are trees, buildings, pits, etc. of different heights, which makes the warning heights of power lines different in different scenes. Therefore, based on different scenes, the warning heights that meet the conditions are preset. The setting of the warning area is specifically as follows: the detection area of ​​the sensor 5 below the wire 100 is the warning area. The sensor 5 can be triggered as soon as the foreign object reaches the lower limit of the warning area. The height of the lower limit of the warning area from the ground is set as the warning height.

[0052] The telescopic assembly includes a linear drive source 6 and a connecting rod 7. The linear drive source 6 is installed at the bottom of the housing 1. The output end of the linear drive source 6 is connected to one end of the connecting rod 7, and the other end of the connecting rod 7 is connected to the sensor 5. The direct-push motor can drive the connecting rod 7 to extend and retract, so that the sensor 5 can be raised or lowered relative to the housing 1 in the height direction, thereby adjusting the height of the warning area of ​​the wire 100, that is, the height of the lower limit of the detection area of ​​the sensor 5 below the wire 100 from the ground, so as to meet the requirements of different power equipment for the surrounding environment.

[0053] S20: The short circuit detector 9 detects in real time whether the electric wire 100 is short-circuited.

[0054] The short circuit detector 9 is a magnetic field sensing device, which is electrically connected to the control circuit board and disposed on the fixing member 4. The short circuit detector 9 detects in real time whether the electric wire 100 is short-circuited based on the Faraday electromagnetic induction principle.

[0055] S30 : When the short-circuit detector 9 detects that the wire 100 is short-circuited, the control circuit board controls the drive motor 2 to turn on, and the drive motor 2 drives the rotating member to retract the rope member 3 , and the rope member 3 pulls up the wire 100 .

[0056] When the short-circuit detector 9 does not detect that the wire 100 is short-circuited, the short-circuit detector 9 sends a low level to the control circuit board, and the control circuit board can control the pulling mechanism to close. When the short-circuit detector 9 detects that the wire 100 is short-circuited, the control circuit board can control the drive motor 2 to open. Under the driving action of the drive motor 2, the rotating member rotates relative to the shell 1 and reels one end of the rope member 3, and the other end of the rope member 3 pulls the wire 100 to make the wire 100 rise relative to the ground, so that the wire 100 gradually moves away from foreign objects.

[0057] S100: The sensor 5 detects in real time whether there is any foreign matter in the warning area below the electric wire 100.

[0058] The sensor 5 is installed below the lifting mechanism and is electrically connected to the control circuit board. The fixing part 4 clamps the end of the wire 100 close to the pole tower. The rope 3 is in a tensioned state, that is, the rope 3 exerts force on the fixing part 4 and the rotating part respectively. Based on the preset warning height, the sensor 5 is at a corresponding position below the shell 1, so that the sensing area of ​​the sensor 5 matches the warning area of ​​the wire 100.

[0059] S200: When the sensor 5 detects that the foreign object is in the warning area below the wire 100, the control circuit board controls the drive motor 2 to turn on, and the drive motor 2 drives the rotating part to retract the rope part 3, and the rope part 3 pulls up the wire 100, and the wire 100 is away from the foreign object.

[0060] When the sensor 5 detects that the foreign object has just triggered the lower limit of the warning area, that is, the foreign object is in the warning area, the sensor 5 sends a high level to the control circuit board, and the control circuit board controls the drive motor 2 to turn on. Under the driving action of the drive motor 2, the rotating member rotates relative to the shell 1 and reels one end of the rope 3, and the other end of the rope 3 pulls the wire 100 to lift the wire 100 relative to the ground, so that the wire 100 gradually moves away from the foreign object.

[0061] S300: When the sensor 5 detects that the foreign object is not in the warning area below the wire 100, the control circuit board controls the drive motor 2 to turn off, the rotating member stops retracting the rope member 3, and the wire 100 remains stationary.

[0062] When the sensor 5 does not detect foreign objects in the warning area below the wire 100, the sensor 5 sends a low level to the control circuit board, and the control circuit board controls the drive motor 2 to turn off, the rotating part stops rotating, and stops retracting the rope part 3, and the wire 100 remains stationary, so that the wire 100 is raised in time when foreign objects approach the construction machinery and an electric shock accident occurs.

[0063] The method for preventing power lines from being damaged by external forces provided in this embodiment is implemented by the device for preventing power lines from being damaged by external forces. The sensor 5 detects in real time whether there are foreign objects in the warning area below the wire 100. When the sensor 5 detects that the foreign objects are in the warning area below the wire 100, the control circuit board controls the drive motor 2 to turn on, and the drive motor 2 drives the rotating part to retract the rope 3. The rope 3 pulls up the wire 100, and the wire 100 is away from the foreign objects. When the sensor 5 detects that the foreign objects are not in the warning area below the wire 100, the control circuit board controls the drive motor 2 to turn off, and the rotating part stops retracting the rope 3, and the wire 100 is stationary. The wire 100 is lifted in time when foreign objects approach the construction machinery and an electric shock accident occurs, thereby reducing the probability of accidents of the wire 100, shortening the time for restoring power supply, and avoiding the purpose of the wire 100 being damaged by external forces. In addition, the traditional means of preventing damage by external forces of manually monitoring the construction site are optimized, which greatly reduces human resources and avoids the tripping of the wire 100 due to human negligence.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for preventing power lines from being damaged by external forces, characterized in that: include: A lifting mechanism, the lifting mechanism comprising a housing (1), a driving motor (2), a rotating member, a rope member (3) and a fixing member (4), the housing (1) being mounted on a pole tower, the driving motor (2) being arranged in the housing (1), the output end of the driving motor (2) being connected to the rotating member, the rotating member being rotatably arranged in the housing (1), one end of the rope member (3) being connected to the rotating member, the other end of the rope member (3) being connected to the fixing member (4), the fixing member (4) being used for clamping the electric wire (100); A detection component, the detection component comprises a sensor (5) and a control circuit board electrically connected to the sensor (5), the sensor (5) is installed below the pulling mechanism, the sensor (5) is used to detect whether there are foreign objects in the warning area of ​​the wire (100), and the control circuit board is used to control the drive motor (2) to be turned on or off.

2. The device for preventing power line from being damaged by external force according to claim 1, characterized in that: The device for preventing external force damage to a power line further comprises a telescopic component, a fixed end of the telescopic component being arranged on the housing (1), a telescopic end of the telescopic component being connected to the sensor (5), and the sensor (5) being telescopic relative to the housing (1) under the action of the telescopic component to adjust the height of the warning area of ​​the electric wire (100).

3. The device for preventing power line from being damaged by external force according to claim 2, characterized in that: The telescopic assembly comprises a linear drive source (6) and a connecting rod (7), wherein the linear drive source (6) is installed at the bottom of the housing (1), the output end of the linear drive source (6) is connected to one end of the connecting rod (7), and the other end of the connecting rod (7) is connected to the sensor (5).

4. The device for preventing power line from external force damage according to claim 1, characterized in that: The power line protection device against external force damage also includes a fixed support (8), wherein the fixed support (8) is arranged on the housing (1), and the fixed support (8) is installed on the cross arm of the pole tower.

5. The device for preventing power line from being damaged by external force according to claim 4, characterized in that: The power line protection device against external force damage also includes a connecting piece, the fixed support (8) is provided with a connecting hole, the cross arm of the pole tower is provided with a mounting hole, and the connecting piece passes through the connecting hole and is fixedly connected to the mounting hole.

6. The device for preventing power line from being damaged by external force according to claim 1, characterized in that: The device for preventing external force damage to a power line further comprises an alarm, which is arranged on the housing (1) and is electrically connected to the control circuit board.

7. The device for preventing power line from being damaged by external force according to claim 1, characterized in that: The power line protection device against external force damage also includes a short circuit detector (9), which is arranged on the fixing member (4) and is electrically connected to the control circuit board. The short circuit detector (9) is used to detect whether the electric wire (100) is short-circuited.

8. A method for preventing power lines from being damaged by external forces, characterized in that: By implementing the device for preventing external force damage to a power line as claimed in any one of claims 1 to 7, the method for preventing external force damage to a power line comprises: S100: the sensor (5) detects in real time whether there is any foreign matter in the warning area below the electric wire (100); S200: When the sensor (5) detects that a foreign object is in the warning area below the electric wire (100), the control circuit board controls the drive motor (2) to turn on, and the drive motor (2) drives the rotating member to retract the rope member (3), and the rope member (3) pulls up the electric wire (100), and the electric wire (100) is away from the foreign object; S300: When the sensor (5) detects that the foreign object is not in the warning area below the wire (100), the control circuit board controls the drive motor (2) to turn off, the rotating member stops retracting the rope member (3), and the wire (100) remains stationary.

9. The method for preventing power lines from being damaged by external forces according to claim 8, characterized in that: The device for preventing external force damage to a power line further comprises a telescopic component, a fixed end of the telescopic component being arranged on the housing (1), a telescopic end of the telescopic component being connected to the sensor (5), and the sensor (5) being telescopic relative to the housing (1) under the action of the telescopic component to adjust the height of the warning area of ​​the electric wire (100); The method for preventing power lines from being damaged by external forces further includes, before S100: S10: Based on a preset warning height, under the action of the telescopic component, the sensor (5) is adjusted in height relative to the housing (1) to adjust the height of the sensing area of ​​the sensor (5) below the wire (100).

10. The method for preventing power lines from being damaged by external forces according to claim 8, characterized in that: The power line protection device against external force damage further comprises a short circuit detector (9), wherein the short circuit detector (9) is arranged on the fixing member (4), and the short circuit detector (9) is electrically connected to the control circuit board, and the short circuit detector (9) is used to detect whether the electric wire (100) is short-circuited; The method for preventing power lines from being damaged by external forces further includes, after S10: S20: the short-circuit detector (9) detects in real time whether the electric wire (100) is short-circuited; S30: When the short-circuit detector (9) detects that the electric wire (100) is short-circuited, the control circuit board controls the drive motor (2) to turn on, and the drive motor (2) drives the rotating member to retract the rope member (3), and the rope member (3) pulls up the electric wire (100).

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