A signal detector for power transmission lines

Abstract

This invention discloses a signal detector for power transmission lines, relating to the technical field of signal detectors for power transmission lines. The signal detector includes a rectangular frame, with a fixing mechanism fixed to the upper surface of the frame. The fixing mechanism includes a fixing plate, a slider, an arc-shaped plate, a limiting spring, a sleeve plate, and a threaded rod. The fixing plate is fixedly connected to the upper surface of the rectangular frame. When the device is impacted, the shock-absorbing device, in conjunction with a hinge rod, a sliding rod, a thrust spring, and a friction block, reduces the downward sliding speed of the placement plate. This prevents the components inside the detector from colliding with each other due to the different speeds of their downward movement or resetting compared to the outer casing, thus avoiding damage to the internal components. This invention solves the problem of component damage caused by inertia leading to a difference in movement speed between the internal components and the outer casing.

Description

Technical Field

[0001] This invention relates to the field of signal detectors for power transmission lines, specifically to a signal detector for power transmission lines. Background Technology

[0002] With the continuous increase in transmission capacity of modern power systems, transmission lines are spread across various complex geographical environments. They not only have to withstand sudden faults such as lightning strikes and external impacts, but also face gradual hidden dangers such as insulator contamination, icing, and hardware discharge. Once these problems cause outages, they can severely impact social production and daily life. In particular, as early-installed power cables gradually enter the middle to late stages of their lifespan, insulation aging becomes a prominent issue, leading to frequent faults and seriously threatening urban power supply security. Therefore, reliable signal detection methods are urgently needed for early warning and fault location.

[0003] A signal detector for power transmission lines, patent publication number CN218158183U, includes a rectangular frame. The detector body is located at the upper interior of the rectangular frame, and a shock-absorbing mechanism is located at the lower interior of the frame. By incorporating this shock-absorbing mechanism, when vibrations occur during use, the receiving plate moves up and down outside the four guide columns, causing the four shock-absorbing springs to stretch or compress, and the airbag to inflate or compress, thus improving the stability of the detector body during use. A fixing mechanism is also included. During use, two arc-shaped plates are placed on either side of the power transmission line. Rotating the two handles moves the two screws on the two fixing plates, bringing the two arc-shaped plates closer together. Simultaneously, two sliders slide within two grooves, causing the two clamping plates to move closer together, clamping and fixing the power transmission line. Finally, two bolts and nuts are used to secure the two arc-shaped plates, facilitating the detection of high-voltage power transmission lines of varying thicknesses.

[0004] However, although the aforementioned signal detectors for transmission lines protect and dampen the receiving plate through shock-absorbing devices and airbags, the main body of the detector needs to be maintained and inspected regularly. It cannot be integrated with the receiving plate, and the weight of the main body of the detector is relatively heavy compared to the receiving plate. When the receiving plate slides up and down, the main body of the detector may collide with the receiving plate due to inertia because the speed of movement of the main body of the detector is different from that of the receiving plate. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a signal detector for power transmission lines, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a signal detector for power transmission lines, comprising a rectangular frame, a fixing mechanism fixed to the upper surface of the rectangular frame, the fixing mechanism comprising a fixing plate, a slider, an arc-shaped plate, a limiting spring, a sleeve plate, and a threaded rod. The fixing plate is fixedly connected to the upper surface of the rectangular frame, the slider is slidably connected to the upper surface of the rectangular frame, the arc-shaped plate is fixedly connected to the upper surface of the slider, the limiting spring is fixedly connected to the inner wall of the arc-shaped plate, the sleeve plate is fixedly connected to the end of the limiting spring away from the arc-shaped plate, and the threaded rod is fixedly connected to the outer wall of the arc-shaped plate. The threaded rod passes through the fixed plate and is threaded at the point of penetration. An airbag is fixed to the inner wall of the rectangular frame. The placement plate is slidably connected to the inner wall of the rectangular frame. The upper surface of the placement plate is attached to the main body of the detector. A guide rod is fixed to the inner wall of the rectangular frame. The guide rod passes through the placement plate and is slidably connected at the point of penetration. A buffer spring is fixed to the bottom surface of the placement plate. The end of the buffer spring away from the placement plate is fixedly connected to the bottom surface of the inner wall of the rectangular frame. A deceleration device for slowing down the placement plate is provided above the placement plate. A fixing device for fixing the main body of the detector is provided above the placement plate. The deceleration device includes a hinge rod, a slide rod, a thrust spring, a friction block, a reel, and a rope. The hinge rod is hinged to the side wall of the inner wall of the rectangular frame, and the slide rod is hinged to the end of the hinge rod away from the side wall of the rectangular frame. The slide rod is slidably connected to the upper surface of the placement plate, and the slide rod moves when the placement plate slides.

[0007] According to the above technical solution, the thrust spring is fixedly connected to the side wall of the slide rod near the rectangular frame, the friction block is fixedly connected to the side wall of the thrust spring away from the slide rod, the bottom surface of the friction block is slidably connected to the upper surface of the placement plate, the side wall of the friction block is in contact with the side wall of the rectangular frame, and the friction block and the rectangular frame rub against each other to generate resistance.

[0008] According to the above technical solution, the reel is fixedly connected to the upper surface of the slide bar, the end of the rope is fixedly connected to the inside of the reel, the reel is set at both ends of the detector body, the outer wall of the rope is in contact with the side wall of the detector body, and the rope fixes the detector body.

[0009] According to the above technical solution, the fixing device includes a protective plate, a trapezoidal plate, an extrusion block, a connecting rod, a connecting block and a top rod. The inner wall of the protective plate is slidably connected to the side wall of the main body of the detector. The trapezoidal plate is fixedly connected to the bottom surface of the protective plate. When the protective plate slides downward, it drives the trapezoidal plate to slide as well.

[0010] According to the above technical solution, the extrusion block is slidably connected to the side wall of the detector body, the connecting rod is hinged to the side wall of the extrusion block, the connecting block is hinged to the end of the connecting rod away from the extrusion block, and the top rod is fixedly connected to the side wall of the connecting block. When the connecting block slides, it drives the top rod to move.

[0011] According to the above technical solution, the side wall of the rectangular frame is provided with a positioning device for positioning the entire equipment. The positioning device includes a top block, a push block, a fixing block, a positioning block, a tension spring, a positioning pin, a suction cup, and a sealing rod.

[0012] According to the above technical solution, the top block is fixedly connected to the bottom surface of the placement plate, the push block penetrates the side wall of the rectangular frame and is slidably connected at the penetration point, the fixing block is fixedly connected to the side wall of the rectangular frame, the positioning block penetrates the fixing block and is slidably connected at the penetration point, and the push block pushes the positioning block downward to slide after being pushed by the top block.

[0013] According to the above technical solution, the tension spring is fixedly connected to the upper surface of the positioning block, the end of the tension spring away from the positioning block is fixedly connected to the bottom surface of the positioning block, the positioning pin is fixedly connected to the bottom surface of the positioning block, and the positioning block drives the positioning pin into the ground.

[0014] According to the above technical solution, the suction cup is fixedly connected to the bottom surface of the positioning block, the sealing rod is fixedly connected to the bottom surface of the fixing block, the sealing rod penetrates the positioning block and is slidably connected at the penetration point, the sealing rod penetrates the suction cup and is slidably connected at the penetration point, and the suction cup adsorbs the ground.

[0015] This invention provides a signal detector for power transmission lines. It has the following advantages: 1. This invention includes a deceleration device. When the device is impacted, the shock absorption device, in conjunction with the hinge rod, slide rod, thrust spring, and friction block, reduces the downward sliding speed of the placement plate. This prevents the components inside the device from colliding with each other due to the different speeds of their downward movement or resetting compared to the outer casing, thus avoiding damage to the components inside the device. This solves the problem of component damage caused by inertia leading to a speed difference between the internal components and the outer casing. Furthermore, when reducing the sliding speed of the placement plate, the device is secured with rollers and ropes, ensuring a tighter fit between the device and the placement plate. This prevents the device from detaching from the placement plate upon impact and colliding with it, thus solving the problem of damage caused by the device detaching from the placement plate upon impact.

[0016] 2. This invention includes a fixing device. When fixing the main body of the detector, a protective plate protects the main body, preventing the rope from repeatedly rubbing against the surface of the main body and causing damage. This solves the problem of accelerated wear and shortened service life of the main body. During the protection of the main body, a trapezoidal plate, a pressing block, a connecting rod, and a top rod are used to position and clamp the main body, preventing displacement upon impact and preventing damage from impact with the side wall of the rectangular frame. This solves the problem of displacement damage to the main body upon impact.

[0017] 3. This invention includes a positioning device. When impacted on relatively soft ground, the device, in conjunction with the top block, push block, fixing block, positioning block, and tension spring, causes the positioning pin to embed itself into the ground, thus preventing displacement of the equipment upon impact and avoiding significant errors in signal detection by the main body of the detector. This solves the problem of equipment displacement upon impact on soft ground. When impacted on relatively hard ground, the device, in conjunction with the top block, push block, fixing block, positioning block, tension spring, positioning pin, and sealing rod, causes the suction cup to adhere tightly to the ground, thus preventing the equipment from sliding off the ground upon impact and potentially causing displacement or breakage of the power transmission line. This solves the problem of potential damage to the power transmission line upon impact. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the full cross-section of the present invention; Figure 3 This is a schematic diagram of part of the deceleration device structure of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure of region A; Figure 5 This is a schematic diagram of the structure of the present invention from a bottom view; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure of region B; Figure 7 This is a schematic diagram of the internal structure of the present invention.

[0019] In the diagram: 1. Rectangular frame; 2. Fixing mechanism; 3. Airbag; 4. Placement plate; 5. Detector body; 6. Guide rod; 71. Hinge rod; 72. Slide rod; 73. Thrust spring; 74. Friction block; 75. Roller; 76. Rope; 81. Protective plate; 82. Trapezoidal plate; 83. Extrusion block; 84. Connecting rod; 85. Connecting block; 86. Top rod; 91. Top block; 92. Push block; 93. Fixing block; 94. Positioning block; 95. Tension spring; 96. Positioning pin; 97. Suction cup; 98. Sealing rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-7 One embodiment of the present invention is as follows: a signal detector for transmission lines includes a rectangular frame 1. A fixing mechanism 2 is fixed to the upper surface of the rectangular frame 1. The fixing mechanism 2 includes a fixing plate, a slider, an arc-shaped plate, a limiting spring, a sleeve plate, and a threaded rod. The fixing plate is fixedly connected to the upper surface of the rectangular frame 1, the slider is slidably connected to the upper surface of the rectangular frame 1, the arc-shaped plate is fixedly connected to the upper surface of the slider, the limiting spring is fixedly connected to the inner wall of the arc-shaped plate, the sleeve plate is fixedly connected to the end of the limiting spring away from the arc-shaped plate, and the threaded rod is fixedly connected to the outer wall of the arc-shaped plate. The threaded rod passes through the fixing plate and is threaded at the point of penetration. Rotating the threaded rod causes the arc-shaped plate and the slider to slide, and the threaded rod causes the sleeve plate to clamp the transmission line. The detector body 5 is used to detect the signal of the transmission line. An airbag 3 is fixed to the inner wall of the rectangular frame 1. The placement plate 4 is slidably connected to the inner wall of the rectangular frame 1. When the equipment is impacted, the placement plate 4 slides on the inner wall of the rectangular frame 1, squeezing the airbag 3 and the buffer spring. The airbag 3 and the buffer spring buffer the placement plate 4. The upper surface of the placement plate 4 is attached to the detector body 5. A guide rod 6 is fixed to the inner wall of the rectangular frame 1. The guide rod 6 passes through the placement plate 4 and is slidably connected at the point of penetration. A buffer spring is fixed to the bottom surface of the placement plate 4. The end of the buffer spring away from the placement plate 4 is fixedly connected to the bottom surface of the inner wall of the rectangular frame 1. A deceleration device is set above the placement plate 4 to slow down the placement plate 4.

[0022] The deceleration device includes a hinge rod 71, a slide rod 72, a thrust spring 73, a friction block 74, a pulley 75, and a rope 76. The hinge rod 71 is hinged to the side wall of the inner wall of the rectangular frame 1, and the slide rod 72 is hinged to the end of the hinge rod 71 away from the side wall of the rectangular frame 1. The slide rod 72 is slidably connected to the upper surface of the placement plate 4. When the placement plate 4 slides downward, it causes the slide rod 72 to move downward as well. When the slide rod 72 moves downward, it causes the hinge rod 71 to rotate around the hinge point between the hinge rod 71 and the rectangular frame 1. When the hinge rod 71 rotates, it causes the slide rod 72 to slide towards the side wall of the rectangular frame 1. The thrust spring 73 is fixedly connected to the side wall of the slide rod 72 near the rectangular frame 1. Friction block 74 is fixedly connected to the side wall of thrust spring 73 away from slide rod 72. The bottom surface of friction block 74 is slidably connected to the upper surface of placement plate 4. The side wall of friction block 74 is in contact with the side wall of rectangular frame 1. When slide rod 72 slides towards the side wall of rectangular frame 1, it compresses thrust spring 73. When thrust spring 73 is compressed, its own restoring elastic force squeezes friction block 74, pushing friction block 74 to fit tightly against the side wall of rectangular frame 1. The frictional resistance between friction block 74 and rectangular frame 1 slows down the downward sliding speed of placement plate 4. Roller 75 is fixedly connected to the upper surface of slide rod 72. When slide rod 72 slides towards the side wall of rectangular frame 1... During sliding, the reel 75 moves away from the main body 5 of the detector. The end of the rope 76 is fixedly connected to the inside of the reel 75. The reels 75 are located at both ends of the main body 5 of the detector. The outer wall of the rope 76 is in contact with the side wall of the main body 5 of the detector. The reels 75 on both sides move away from each other. Pulling the rope 76 tightens it. When the rope 76 is tightened, it presses down on the main body 5 of the detector, fixing the main body 5 of the detector. When the equipment is impacted and the shock absorption device absorbs the shock of the main body 5, the deceleration device, in conjunction with the hinge rod 71, slide rod 72, thrust spring 73 and friction block 74, reduces the downward sliding speed of the placement plate 4, thereby preventing the internal components of the main body 5 of the detector from sliding down. The components inside the detector body 5 move downwards or reset at different speeds than their outer casing, causing them to collide with each other and damage the components inside. This solves the problem that the components inside the detector body 5 may be damaged due to inertia and different moving speeds from the outer casing. When the sliding speed of the placement plate 4 is reduced, the detector body 5 is fixed with the roller 75 and rope 76, making the detector body 5 fit more tightly with the placement plate 4. This prevents the detector body 5 from detaching from the placement plate 4 when it is impacted and colliding with each other, thus preventing damage to the detector body 5. This solves the problem of the detector body 5 detaching from the placement plate 4 and being damaged when it is impacted.

[0023] In this embodiment, during operation: rotating the threaded rod causes the arc-shaped plate and slider to slide, and the threaded rod drives the sleeve plate to clamp and fix the transmission line. The main body 5 of the detector is started. The main body 5 of the detector integrates a voltage sensor, a current sensor, a signal acquisition module and a data processing unit. Through the sleeve plate, it contacts the transmission line, and the various sensors collect electrical signals such as voltage, current, frequency and harmonics on the line. Then, the data processing unit processes the collected signals to detect the electrical signals of the transmission line.

[0024] When the equipment is impacted, the placement plate 4 slides against the inner wall of the rectangular frame 1, compressing the airbag 3 and the buffer spring. The airbag 3 and the buffer spring cushion the placement plate 4. As the placement plate 4 slides downward, it causes the sliding rod 72 to move downward as well. When the sliding rod 72 moves downward, it causes the hinge point between the hinge rod 71 and the sliding rod 72 to move downward as well. Since the hinge rod 71 is hinged to the side wall of the rectangular frame 1, the hinge point between the hinge rod 71 and the rectangular frame 1 remains fixed. When the placement plate 4 causes the sliding rod 72 to move downward, it causes the hinge rod 71 to rotate around the hinge point between the hinge rod 71 and the rectangular frame 1. When the hinge rod 71 rotates, it causes the sliding rod 72 to slide towards the side wall of the rectangular frame 1. When the sliding rod 72 slides towards the side wall of the rectangular frame 1, it compresses the thrust spring 73. When the thrust spring 73 is compressed, its self-restoring elasticity reduces friction. The friction block 74 is squeezed, pushing the friction block 74 to fit tightly against the side wall of the rectangular frame 1. The frictional resistance between the friction block 74 and the rectangular frame 1 slows down the downward sliding speed of the placement plate 4. When the slide rod 72 slides towards the side wall of the rectangular frame 1, it drives the roller 75 to move away from the detector body 5. The rollers 75 on both sides move away from each other, pulling the rope 76 to tighten. When the rope 76 is tightened, it presses down on the detector body 5 and fixes the detector body 5. When the placement plate 4 is reset by the elastic force of the airbag 3 and the buffer spring, the placement plate 4 drives the slide rod 72 to move. The slide rod 72 drives the hinge rod 71 to rotate. The hinge rod 71 pushes the slide rod 72 to slide towards the detector body 5. The thrust spring 73 returns to its original state. At the same time, the friction between the friction block 74 and the rectangular frame 1 slows down the reset speed of the placement plate 4.

[0025] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, a fixing device for fixing the detector body 5 is provided above the placement plate 4. The fixing device includes a protective plate 81, a trapezoidal plate 82, a pressing block 83, a connecting rod 84, a connecting block 85, and a top rod 86. The inner wall of the protective plate 81 is slidably connected to the side wall of the detector body 5. The protective plate 81 is made of magnets, and a magnetic sheet that repels the protective plate 81 is attached to the upper surface of the detector body 5. When the rope 76 presses down on the detector body 5, it pushes the protective plate 81 to slide downwards. When the upper surface of plate 81 is tensioned and slid, it rubs against the protective plate 81, which protects the main body 5 of the detector. The trapezoidal plate 82 is fixedly connected to the bottom surface of the protective plate 81. When the protective plate 81 slides downward, it drives the trapezoidal plate 82 to slide downward as well. The extrusion block 83 is slidably connected to the side wall of the main body 5 of the detector. When the trapezoidal plate 82 slides to the extrusion block 83, it pushes the extrusion block 83 to slide away from the main body 5 of the detector. The connecting rod 84 is hinged to the side wall of the extrusion block 83. When the extrusion blocks 83 on both sides move away from each other, they drive the connecting rod 84 to slide away from the main body 5 of the detector. 4. The connecting block 85 is hinged to the end of the connecting rod 84 away from the pressing block 83. When the connecting rod 84 rotates, it drives the connecting block 85 to slide towards the main body 5 of the detector. The top rod 86 is fixedly connected to the side wall of the connecting block 85. The connecting block 85 drives the top rod 86 to slide towards the main body 5 of the detector. The connecting block 85 positions and clamps the main body 5 of the detector through the top rod 86. When fixing the main body 5 of the detector, the fixing device protects the main body 5 of the detector through the protective plate 81, thereby preventing the rope 76 from being used when fixing the main body 5 of the detector. The surface of the detector body 5 is repeatedly rubbed back and forth, causing damage to the detector body 5, thus solving the problem of accelerated wear and shortened service life of the detector body 5; when protecting the detector body 5, the trapezoidal plate 82, the pressing block 83, the connecting rod 84, the connecting block 85 and the top rod 86 are used to position and clamp the detector body 5, thereby preventing the detector body 5 from shifting when it is impacted, causing the detector body 5 to collide with the side wall of the rectangular frame 1 and be damaged, thus solving the problem of displacement damage to the detector body 5 when it is impacted.

[0026] The side wall of the rectangular frame 1 is equipped with a positioning device for positioning the entire equipment. The positioning device includes a top block 91, a push block 92, a fixing block 93, a positioning block 94, a tension spring 95, a positioning pin 96, a suction cup 97, and a sealing rod 98. The top block 91 is fixedly connected to the bottom surface of the placement plate 4. When the placement plate 4 slides downward, it drives the top block 91 to slide downward as well. The push block 92 passes through the side wall of the rectangular frame 1 and is slidably connected at the penetration point. When the top block 91 slides to the push block 92, it pushes the push block 92 outward. The fixing block 93 is fixedly connected to the side wall of the rectangular frame 1. The positioning block 94 passes through the fixing block 93 and is slidably connected at the penetration point. When the top block 95 slides to the push block 96, it pushes the push block 97 outward. The top block 91 is fixedly connected to the side wall of the rectangular frame 1. The positioning block 94 passes through the fixing block 93 and is slidably connected at the penetration point. When the top block 95 slides to the bottom surface of the placement plate 4, it drives the top block 91 to slide downward as well. The top block 91 is fixedly connected to the side wall of the rectangular frame 1. The positioning block 94 passes through the fixing block 93 and is slidably connected at the penetration point. When the top block 95 slides to the bottom surface of the placement plate 4, it drives the top block 96 ... 2. When the device slides to the positioning block 94, it pushes the positioning block 94 downwards. The tension spring 95 is fixedly connected to the upper surface of the positioning block 94, and the end of the tension spring 95 away from the positioning block 94 is fixedly connected to the bottom surface of the fixing block 93. When the positioning block 94 slides downwards, it stretches the tension spring 95. The positioning pin 96 is fixedly connected to the bottom surface of the positioning block 94. When the device is placed on relatively soft ground, the positioning pin 96 moves downwards as the positioning block 94 slides downwards, and the positioning pin 96 penetrates into the ground, limiting the positioning block 94. The suction cup 97 is fixedly connected to the bottom surface of the positioning block 94, and the positioning block 94 also limits the rectangular frame 1. When the equipment is placed on a relatively hard surface, the positioning block 94 causes the suction cup 97 to move downwards, making the suction cup 97 adhere to the ground. The sealing rod 98 is fixedly connected to the bottom surface of the fixing block 93, and it passes through the positioning block 94 with a sliding connection at the penetration point. The sealing rod 98 also passes through the suction cup 97 with a sliding connection at the penetration point. As the positioning block 94 moves downwards, the sealing rod 98 slides upwards relative to the suction cup 97, drawing air out of the suction cup 97 and causing it to adhere tightly to the ground, thus positioning the equipment. When the positioning device is impacted on softer ground, it works in conjunction with the top block 91, push block 92, fixing block 93, and positioning block 94. The tension spring 95 and the positioning pin 96 are driven into the ground, thus preventing the equipment from shifting when impacted, which would cause a large error in the detection of signals by the main body 5 of the detector. This solves the problem of equipment displacement when impacted on soft ground. When impacted on harder ground, the top block 91, push block 92, fixing block 93, positioning block 94, tension spring 95, positioning pin 96 and sealing rod 98 work together to make the suction cup 97 firmly adhere to the ground, thus preventing the equipment from sliding off the ground when impacted, causing displacement or breakage of the power transmission line. This solves the problem of potential damage to the power transmission line when the equipment is impacted.

[0027] In this embodiment, during operation: when the rope 76 presses down on the main body 5 of the detector, it pushes the protective plate 81 to slide downwards. As the rope 76 is taut and slides on the upper surface of the protective plate 81, it rubs against the protective plate 81, thus protecting the main body 5 of the detector. When the protective plate 81 slides downwards, it also causes the trapezoidal plate 82 to slide downwards. When the trapezoidal plate 82 slides to the pressing block 83, the inclined surface of the trapezoidal plate 82 slides against the side of the pressing block 83. The trapezoidal plate 82 pushes the pressing block 83 to slide away from the main body 5 of the detector. As the pressing blocks 83 on both sides move away from each other, the hinge point between the pressing block 83 and the connecting rod 84 moves away from each other, and the connecting rod 84 moves away from the pressing block 83. One end is hinged to the connecting block 85, and the connecting block 85 slides on the upper surface of the placement plate 4. Therefore, the hinge point between the connecting rod 84 and the connecting block 85 can only move in the Y-axis direction. When the pressing blocks 83 on both sides move away from each other, the connecting rod 84 is driven to rotate. When the connecting rod 84 rotates, it drives the connecting block 85 to slide in the direction of the detector body 5. The connecting block 85 drives the top rod 86 to slide in the direction of the detector body 5. The connecting block 85 positions and clamps the detector body 5 through the top rod 86. When the placement plate 4 drives the detector body 5 to reset, since the roller 75 and the rope 76 also reset, the rope 76 no longer presses the protective plate 81. The protective plate 81 is repelled by the magnetic sheet and slides upward to reset.

[0028] When the placement plate 4 slides downwards, it causes the top block 91 to slide downwards as well. When the top block 91 slides to the push block 92, the inclined surface of the top block 91 slides against the side of the push block 92, pushing the push block 92 outwards. When the push block 92 slides to the positioning block 94, the inclined surface of the push block 92 slides against the side of the positioning block 94, pushing the positioning block 94 downwards. As the positioning block 94 slides downwards, it stretches the tension spring 95. When the equipment is placed on relatively soft ground, the positioning pin 96 moves downwards as the positioning block 94 slides downwards. Positioning nail 96 is driven into the ground to limit positioning block 94. Positioning block 94 also limits rectangular frame 1. When the equipment is placed on a relatively hard ground, positioning block 94 drives suction cup 97 to move downwards, and suction cup 97 adheres to the ground. At the same time, as positioning block 94 moves downwards, sealing rod 98 slides upwards relative to suction cup 97, evacuating air from inside suction cup 97, so that suction cup 97 is tightly adhered to the ground, positioning the equipment. When the equipment is finished using, positioning block 94 is pushed upwards, and positioning block 94 is released from the ground and reset by the restoring force of tension spring 95.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A signal detector for power lines, comprising a rectangular frame (1), characterized in that: A fixing mechanism (2) is fixed to the upper surface of the rectangular frame (1). The fixing mechanism (2) includes a fixing plate, a slider, an arc plate, a limiting spring, a sleeve plate, and a threaded rod. The fixing plate is fixedly connected to the upper surface of the rectangular frame (1). The slider is slidably connected to the upper surface of the rectangular frame (1). The arc plate is fixedly connected to the upper surface of the slider. The limiting spring is fixedly connected to the inner wall of the arc plate. The sleeve plate is fixedly connected to the end of the limiting spring away from the arc plate. The threaded rod is fixedly connected to the outer wall of the arc plate. The threaded rod passes through the fixing plate and is threaded at the point of penetration. An airbag (3) is fixed to the inner wall of the rectangular frame (1). The placement plate (4) is slidably connected to the inner wall of the rectangular frame (1). The upper surface of the placement plate (4) is attached to the detector body (5). The inner wall of the rectangular frame (1) is fixed with a guide rod (6). The guide rod (6) passes through the placement plate (4) and is slidably connected at the point of penetration. The bottom surface of the placement plate (4) is fixed with a buffer spring. The end of the buffer spring away from the placement plate (4) is fixedly connected to the bottom surface of the inner wall of the rectangular frame (1). A deceleration device for decelerating the placement plate (4) is provided above the placement plate (4). A fixing device for fixing the detector body (5) is provided above the placement plate (4). The deceleration device includes a hinge rod (71), a slide rod (72), a thrust spring (73), a friction block (74), a reel (75), and a rope (76). The hinge rod (71) is hinged to the side wall of the inner wall of the rectangular frame (1), and the slide rod (72) is hinged to the end of the hinge rod (71) away from the side wall of the rectangular frame (1). The slide rod (72) is slidably connected to the upper surface of the placement plate (4).

2. A signal detector for power lines as claimed in claim 1, characterized in that: The thrust spring (73) is fixedly connected to the side wall of the slide rod (72) near the rectangular frame (1), and the friction block (74) is fixedly connected to the side wall of the thrust spring (73) away from the slide rod (72). The bottom surface of the friction block (74) is slidably connected to the upper surface of the placement plate (4), and the side wall of the friction block (74) is in contact with the side wall of the rectangular frame (1).

3. A signal detector for a power transmission line according to claim 2, characterised in that: The reel (75) is fixedly connected to the upper surface of the slide bar (72), the end of the rope (76) is fixedly connected to the inside of the reel (75), the reel (75) is set at both ends of the detector body (5), and the outer wall of the rope (76) is in contact with the side wall of the detector body (5).

4. A signal detector for a power transmission line according to claim 3, characterised in that: The fixing device includes a protective plate (81), a trapezoidal plate (82), an extrusion block (83), a connecting rod (84), a connecting block (85), and a top rod (86). The inner wall of the protective plate (81) is slidably connected to the side wall of the main body (5) of the detector, and the trapezoidal plate (82) is fixedly connected to the bottom surface of the protective plate (81).

5. A signal detector for a power transmission line according to claim 4, characterised in that: The extrusion block (83) is slidably connected to the side wall of the detector body (5), the connecting rod (84) is hinged to the side wall of the extrusion block (83), the connecting block (85) is hinged to the end of the connecting rod (84) away from the extrusion block (83), and the top rod (86) is fixedly connected to the side wall of the connecting block (85).

6. A signal detector for a power transmission line according to claim 5, characterized in that: The side wall of the rectangular frame (1) is provided with a positioning device for positioning the entire equipment. The positioning device includes a top block (91), a push block (92), a fixing block (93), a positioning block (94), a tension spring (95), a positioning pin (96), a suction cup (97), and a sealing rod (98).

7. A signal detector for a power transmission line according to claim 6, characterised in that: The top block (91) is fixedly connected to the bottom surface of the placement plate (4), the push block (92) penetrates the side wall of the rectangular frame (1) and is slidably connected at the penetration point, the fixing block (93) is fixedly connected to the side wall of the rectangular frame (1), and the positioning block (94) penetrates the fixing block (93) and is slidably connected at the penetration point.

8. A signal detector for a power transmission line according to claim 7, characterised in that: The tension spring (95) is fixedly connected to the upper surface of the positioning block (94), and the end of the tension spring (95) away from the positioning block (94) is fixedly connected to the bottom surface of the fixing block (93). The positioning pin (96) is fixedly connected to the bottom surface of the positioning block (94).

9. A signal detector for a power transmission line according to claim 8, characterised in that: The suction cup (97) is fixedly connected to the bottom surface of the positioning block (94), the sealing rod (98) is fixedly connected to the bottom surface of the fixing block (93), the sealing rod (98) passes through the positioning block (94) and is slidably connected at the penetration point, and the sealing rod (98) passes through the suction cup (97) and is slidably connected at the penetration point.

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