Safety detection device for electric power engineering

Abstract

The invention discloses a safety detection device for electric power engineering, and belongs to the technical field of electric power detection. The safety detection device for the electric power engineering comprises a moving trolley, limiting mechanisms are arranged on the inner wall and the outer wall of a servo motor, and a detection mechanism used for detecting electric power is arranged on the inner wall of a rotating sleeve. After the threaded rod rotates to push the connecting pipe to rise to a proper height, the limiting mechanism can release the connection between the threaded rod and the connecting pipe, so that the threaded rod stops pushing the connecting pipe to rise and drives the rotating sleeve to rotate, and therefore, the angle of the detection mechanism is adjusted, and the air cylinder is matched to push the probe to rotate; according to the sulfur hexafluoride gas detection device, multi-angle and multi-direction detection of a detection point can be achieved, meanwhile, sulfur hexafluoride gas is blown to the surface of the detection point through extrusion of the piston plate, a protection layer is formed, air is isolated, sparks are prevented from reacting with oxygen in the air, meanwhile, the discharged sulfur hexafluoride gas can be recycled, and doped air can be separated out.

Description

Technical Field

[0001] The present invention relates to the technical field of power detection, and in particular to a safety detection device for power engineering. Background Art

[0002] Power equipment covers various equipment used for generating, transmitting, and distributing electric energy in the power system, mainly including generators, transformers, inverters, etc. To ensure the normal operation of power equipment, daily inspections are crucial, including parameters such as temperature, insulation status, and real-time current and voltage. Among them, insulation detection mainly focuses on detecting and evaluating the insulation system in power equipment to ensure that the insulation system of the equipment can effectively isolate electrical components, prevent current from passing through, and prevent insulation breakdown or insulation faults.

[0003] Chinese Patent CN117890633B announced on May 17, 2024 discloses a power equipment detection device. By setting up a detection mechanism, an electric telescopic rod drives the first telescopic rod to extend out of the sleeve rod, and the first toothed plate drives the first gear to rotate, thereby driving the second toothed plate to drive the second telescopic rod to extend simultaneously, so that the probe contacts the surface of the power equipment, and then the insulation detector is used to detect the insulation of the equipment. When the insulation status is normal, the warning light turns green; when the insulation status is abnormal, the warning light turns red, warning the staff to carry out maintenance. This can effectively avoid the direct contact between the staff and the power equipment and prevent electric shock accidents. However, this power equipment detection device can only reach the detection point in the horizontal direction during operation, and there may be electric arcs or sparks during detection, which may cause damage to the detection point, making it still inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a safety detection device for power engineering to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A safety detection device for power engineering, including a mobile trolley, and a laser rangefinder installed on the outer wall of the mobile trolley. A servo motor is installed on the inner wall of the mobile trolley. One end of the outer wall of the servo motor is rotatably connected to a threaded sleeve. Multiple groups of double-sided threaded pipes that are sleeved with each other and can axially slide are arranged on the inner wall of the threaded sleeve. A threaded rod is threadedly connected to the inner wall of the double-sided threaded pipe. One end of the outer wall of the threaded rod is rotatably connected to a connecting pipe. Multiple groups of telescopic sleeves that are sleeved with each other and can axially slide are arranged on the outer wall of the connecting pipe. A limiting mechanism for limiting the rotation of the threaded rod is arranged on the inner and outer walls of the servo motor. A rotating sleeve is fixedly connected to the top outer wall of the threaded rod. A detection mechanism for detecting electricity is arranged on the inner wall of the rotating sleeve.

[0006] Further, the limiting mechanism includes a connecting rod damping-connected to the inner wall of the moving trolley, and a connecting disc arranged on the inner wall of the top end of the connecting pipe and fixedly connected to the threaded rod. A limiting hole is arranged along the circumferential direction on the inner peripheral edge of the connecting disc. A limiting rod adapted to the limiting hole is arranged on the inner wall of the top end of the connecting pipe, and the limiting rod is damping-connected to the connecting pipe. A limiting spring adapted to the limiting rod is arranged on the inner wall of the top end of the connecting pipe. A fixing rod is arranged along the circumferential direction on the outer peripheral edge of one end of the connecting rod. A rope adapted to the limiting rod is fixedly connected to the outer wall of a winding disc on the outer wall of one end of the fixing rod. A slider is slidably connected to the outer wall of the fixing rod. A chute adapted to the slider is arranged on the inner wall of the moving trolley. Connecting holes are arranged on the outer wall of the moving trolley along a spiral at equal intervals, and one end of the connecting hole is connected to the chute. A pin adapted to the slider is arranged on the inner wall of the connecting hole.

[0007] Further, the limiting mechanism further includes a connecting block arranged on the outer wall of the threaded sleeve, and a second bevel gear arranged on the inner wall of one end of the connecting rod. A transmission belt is rotatably connected to the outer wall of the connecting block. A connecting shaft is rotatably connected to the inner wall of the moving trolley. A transmission block adapted to the transmission belt is arranged on the outer wall of one end of the connecting shaft. A first bevel gear adapted to the second bevel gear is arranged on the outer wall of one end of the connecting shaft. A ratchet wheel is fixedly connected to the outer wall of the second bevel gear. A ratchet pawl adapted to the ratchet wheel is arranged on the outer wall of one end of the connecting rod. A first spring piece adapted to the ratchet pawl is arranged on the outer wall of one end of the connecting rod.

[0008] Further, the detection mechanism includes a telescopic block installed on the inner wall of the rotating sleeve, and a protection component for protecting the detection point. An electric cylinder adapted to the telescopic block is arranged on the outer wall of one end of the rotating sleeve. A rotating shaft is rotatably connected to the inner wall of one end of the telescopic block. A driving motor adapted to the rotating shaft is arranged on the inner wall of the telescopic block. A universal ball is fixedly connected to the outer wall of one end of the rotating shaft. A connecting sleeve is rotatably connected to the outer wall of the universal ball. A probe is installed on the outer wall of the connecting sleeve. A connecting plate is fixedly connected to the outer wall of the probe. A permanent magnet coil is arranged on the inner wall of the connecting plate. A cylinder is fixedly connected to the outer wall of one end of the rotating shaft. A guiding block adapted to the probe is arranged on the outer wall of one end of the cylinder.

[0009] Further, the protection component includes a gas chamber opened inside the mobile trolley for storing sulfur hexafluoride gas. A hydraulic cylinder is fixedly connected to the inner wall of the mobile trolley. A piston plate adapted to the gas chamber is arranged on the outer wall of one end of the hydraulic cylinder. An air outlet groove adapted to the gas chamber is arranged on the inner wall of the mobile trolley. A second spring piece is fixedly connected to the inner wall of the air outlet groove. A first baffle adapted to the air outlet groove is arranged on the outer wall of the second spring piece. A first telescopic tube adapted to the air outlet groove is arranged at a position inside the connecting pipe on the outer wall of the mobile trolley, and one end of the first telescopic tube passes through the top end of the connecting pipe. A first air inlet groove adapted to the first telescopic tube is arranged on the outer wall of one side of the rotary sleeve. An air outlet conduit adapted to the first air inlet groove is arranged on the inner wall of the rotary sleeve. An air guide groove adapted to the air outlet conduit is arranged on the inner wall of the telescopic block. An air outlet annular groove adapted to the air guide groove is arranged on the outer wall of the rotary shaft. An air outlet channel adapted to the air outlet annular groove is arranged on the inner wall of the rotary shaft. An air outlet pipe adapted to the air outlet channel is arranged on the outer wall of the rotary shaft. An air outlet hole adapted to the air outlet pipe is arranged on the outer wall of the connecting plate.

[0010] Further, the protection component further includes a second air inlet groove arranged at a position above the gas chamber. A third spring piece is fixedly connected to the inner wall of the top end of the gas chamber. A second baffle adapted to the second air inlet groove is arranged on the outer wall of the third spring piece. A second telescopic tube adapted to the second air inlet groove is arranged at a position inside the connecting pipe on the outer wall of the mobile trolley, and one end of the second telescopic tube passes through the top end of the connecting pipe. An exhaust groove adapted to the second telescopic tube is arranged on the outer wall of one side of the rotary sleeve. An air suction conduit adapted to the exhaust groove is arranged on the inner wall of the rotary sleeve. An air suction groove adapted to the air suction conduit is arranged on the inner wall of the telescopic block. An air suction annular groove adapted to the air suction groove is arranged on the outer wall of the rotary shaft. An air suction channel adapted to the air suction annular groove is arranged on the inner wall of the rotary shaft. An air suction pipe adapted to the air suction channel is arranged on the outer wall of the rotary shaft. An air suction hole adapted to the air suction pipe is arranged on the outer wall of the connecting plate.

[0011] Further, the protection component further includes an electric three-way valve installed on the inner wall of the mobile trolley. An exhaust through groove adapted to the electric three-way valve is arranged on the inner wall of the top end of the gas chamber. A connecting spring is fixedly connected to the inner wall of the exhaust through groove. A sealing plate adapted to the exhaust through groove is arranged at one end of the connecting spring. A groove is arranged on the outer peripheral edge of the sealing plate in the circumferential direction. An air outlet adapted to the electric three-way valve is arranged on the outer wall of the mobile trolley. An air inlet through groove adapted to the electric three-way valve is arranged on the inner wall of the bottom end of the gas chamber.

[0012] Different from the prior art, the beneficial effects of the present application are as follows: for the safety detection device used in the power project, after the connecting pipe is pushed up to an appropriate height by the rotation of the threaded rod, the limiting mechanism can release the connection between the threaded rod and the connecting pipe, so that the threaded rod stops pushing the connecting pipe to rise, and drives the rotating sleeve to rotate, thereby adjusting the angle of the detection mechanism, and cooperating with the cylinder to drive the rotation of the probe, which can realize the detection of the detection point from multiple angles and directions. At the same time, the sulfur hexafluoride gas is blown onto the surface of the detection point by the extrusion of the piston plate and forms a protective layer to isolate the air, avoiding the reaction between the spark and the oxygen in the air. At the same time, the discharged sulfur hexafluoride gas can be recovered and the doped air can be separated out. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the external structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the mobile trolley of the present invention; Figure 3 is a schematic diagram of the cooperating structure of the pawl and the ratchet of the present invention; Figure 4 is a schematic diagram of the cooperating structure of the fixed rod and the winding disc of the present invention; Figure 5 is a schematic diagram of the cooperating structure of the sliding groove and the connecting hole of the present invention; Figure 6 is a schematic diagram of the cooperating structure of the rotating sleeve and the telescopic block of the present invention; Figure 7 is a schematic diagram of the cooperating structure of the universal ball and the connecting sleeve of the present invention; Figure 8 is a schematic diagram of the cooperating structure of the cylinder and the guide block of the present invention; Figure 9 is a schematic diagram of the cooperating structure of the hydraulic cylinder and the piston plate of the present invention; Figure 10 is a schematic diagram of the cooperating structure of the second air inlet groove and the second telescopic pipe of the present invention; Figure 11 is a schematic diagram of the cooperating structure of the air suction groove and the air suction annular groove of the present invention; Figure 12 is a schematic diagram of the cooperating structure of the air suction annular groove and the air suction channel of the present invention; Figure 13 is the present invention Figure 2 The enlarged schematic diagram at position A; Figure 14 is the present invention Figure 9 The enlarged schematic diagram at position B; Figure 15 is the present invention Figure 9 The enlarged schematic diagram at position C; Figure 16 For the present invention Figure 9 Schematic enlarged structure diagram at position D in the present invention.

[0014] In the figure: 1. Moving trolley; 2. Laser rangefinder; 3. Servo motor; 4. Threaded sleeve; 5. Double-sided threaded pipe; 6. Threaded rod; 7. Connecting pipe; 8. Telescopic sleeve; 9. Connecting plate; 10. Limiting hole; 11. Connecting block; 12. Transmission belt; 13. Connecting shaft; 14. Transmission block; 15. First bevel gear; 16. Connecting rod; 17. Second bevel gear; 18. Ratchet; 19. Pawl; 20. First spring piece; 21. Fixed rod; 22. Reel; 23. Rope; 24. Limiting rod; 25. Limiting spring; 26. Slide block; 27. Slide groove; 28. Connecting hole; 29. Plug; 30. Rotating sleeve; 31. Telescopic block; 32. Electric cylinder; 33. Rotating shaft; 34. Driving motor; 35. Universal ball; 36. Connecting sleeve; 37. Probe; 38. Connecting plate; 39. Permanent magnet coil; 40. Cylinder; 41. Guide block; 42. Air chamber; 43. Hydraulic cylinder; 44. Piston plate; 45. Air outlet groove; 46. Second spring piece; 47. First baffle; 48. First telescopic pipe; 49. First air inlet groove; 50. Air outlet duct; 52. Air guide groove; 53. Air outlet annular groove; 54. Air outlet channel; 55. Air outlet pipe; 56. Air outlet hole; 57. Second air inlet groove; 58. Third spring piece; 59. Second baffle; 60. Second telescopic pipe; 61. Exhaust groove; 62. Suction duct; 63. Suction groove; 64. Suction annular groove; 65. Suction channel; 66. Suction pipe; 67. Suction hole; 68. Exhaust through groove; 69. Connecting spring; 70. Sealing plate; 71. Groove; 72. Electric three-way valve; 73. Air outlet; 74. Air inlet through groove. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. Next, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0017] Embodiment 1. Please refer to Figures 1 - 16, the present invention provides a technical solution: a safety detection device for electric power engineering, including a mobile trolley 1, and a laser rangefinder 2 installed on the outer wall of the mobile trolley 1. A servo motor 3 is installed on the inner wall of the mobile trolley 1. One end of the outer wall of the servo motor 3 is rotatably connected to a threaded sleeve 4. A plurality of double-sided threaded tubes 5 that are sleeved with each other and can axially slide are arranged on the inner wall of the threaded sleeve 4. A threaded rod 6 is threadedly connected to the inner wall of the double-sided threaded tube 5. One end of the outer wall of the threaded rod 6 is rotatably connected to a connecting tube 7. A plurality of telescopic sleeves 8 that are sleeved with each other and can axially slide are arranged on the outer wall of the connecting tube 7. A limiting mechanism for limiting the rotation of the threaded rod 6 is arranged on the inner and outer walls of the servo motor 3. A rotating sleeve 30 is fixedly connected to the top outer wall of the threaded rod 6. A detection mechanism for detecting electricity is arranged on the inner wall of the rotating sleeve 30.

[0018] During use, first push the mobile trolley 1 to the position below the detection point, and measure the height of the detection point through the laser rangefinder 2. Then connect the external power supply to start the servo motor 3 to drive the threaded sleeve 4 to rotate. The rotation of the threaded sleeve 4 will drive a plurality of double-sided threaded tubes 5 and threaded rods 6 that are sleeved with each other to slide out upwards in sequence and push the connecting tube 7 to slide out upwards. After the connecting tube 7 completely slides out of the inside of the telescopic sleeve 8, as the servo motor 3 continues to work, it will drive a plurality of telescopic sleeves 8 that are sleeved with each other to slide out upwards, so as to lift the detection mechanism to an appropriate height. At the same time, the limiting mechanism will release the connection between the threaded rod 6 and the connecting tube 7, so that when the threaded rod 6 rotates again, it will not push the connecting tube 7 to rise, but drive the rotating sleeve 30 to rotate on the surface of the connecting tube 7, so as to adjust the angle of the detection mechanism.

[0019] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 13 , the limiting mechanism includes a connecting rod 16 that is dampingly connected to the inner wall of the mobile trolley 1, and a connecting disk 9 that is arranged on the top inner wall of the connecting tube 7 and is fixedly connected to the threaded rod 6. A limiting hole 10 is arranged on the inner peripheral edge of the connecting disk 9 in the circumferential direction. A limiting rod 24 that is adapted to the limiting hole 10 is arranged on the top inner wall of the connecting tube 7, and the limiting rod 24 is dampingly connected to the connecting tube 7. A limiting spring 25 that is adapted to the limiting rod 24 is arranged on the top inner wall of the connecting tube 7. A fixing rod 21 is arranged on the outer peripheral edge of one end of the connecting rod 16 in the circumferential direction. A winding disk 22 is fixedly connected to the outer wall of one end of the fixing rod 21. A rope 23 that is adapted to the limiting rod 24 is arranged on the outer wall of the winding disk 22. A slider 26 is slidably connected to the outer wall of the fixing rod 21. A sliding groove 27 that is adapted to the slider 26 is arranged on the inner wall of the mobile trolley 1. Connecting holes 28 are arranged on the outer wall of the mobile trolley 1 in a spiral and equally spaced manner, and one end of the connecting hole 28 is connected to the sliding groove 27. A plug pin 29 that is adapted to the slider 26 is arranged on the inner wall of the connecting hole 28.

[0020] During use, after measuring the height of the detection point with the laser rangefinder 2, insert the bolt 29 into the appropriate connection hole 28. When the connecting pipe 7 and the multiple sets of telescopically sleeved telescopic sleeves 8 slide upward, due to the damping connection between the limiting rod 24 and the connecting pipe 7 and the thrust exerted on the surface of the limiting rod 24 by the limiting spring 25, when the connecting pipe 7 slides upward, it can drive the limiting rod 24 to move upward synchronously. When the limiting rod 24 moves upward, it will pull the winding disc 22 to rotate inside the moving trolley 1 with the connecting rod 16 as the center through the rope 23. When the winding disc 22 rotates, it will drive the moving slider 26 to rotate synchronously through the fixed rod 21, causing one end of the slider 26 to perform a spiral motion along the surface of the chute 27. And through the guiding of the chute 27 on the slider 26, when the slider 26 moves along the surface of the chute 27, it will also slide along the surface of the fixed rod 21. When the slider 26 moves along the surface of the chute 27 to contact the bolt 29, the bolt 29 will limit the continuous rotation of the winding disc 22 through the slider 26, thereby preventing the unwinding work of the winding disc 22. At this time, as the connecting pipe 7 continues to rise, a downward pulling force is exerted on the limiting rod 24 by the rope 23, thereby pulling the limiting rod 24 to slide downward inside the connecting pipe 7 and compressing the limiting spring 25, so that one end of the limiting rod 24 slides out of the surface of the limiting hole 10, and the connection between the connection disc 9 and the connecting pipe 7 can be released, so that when the threaded rod 6 rotates, it will not drive the connecting pipe 7 to rise anymore, but drive the rotating sleeve 30 to rotate on the surface of the connecting pipe 7. After the power detection is completed, pull out the bolt 29 from the inside of the connection hole 28, thereby releasing the limit on the slider 26. At this time, under the action of the force on the limiting spring 25, the limiting rod 24 rises and passes through the surface of the limiting hole 10 again, and limits the connection disc 9 again.

[0021] Please refer to Figure 2 and Figure 3 As shown in [figures not specified] and [figures not specified], the limiting mechanism further includes a connection block 11 provided on the outer wall of the threaded sleeve 4, and a second bevel gear 17 provided on the inner wall of one end of the connecting rod 16. A transmission belt 12 is rotatably connected to the outer wall of the connection block 11. A connection shaft 13 is rotatably connected to the inner wall of the moving trolley 1. A transmission block 14 adapted to the transmission belt 12 is provided on the outer wall of one end of the connection shaft 13. A first bevel gear 15 adapted to the second bevel gear 17 is provided on the outer wall of one end of the connection shaft 13. A ratchet 18 is fixedly connected to the outer wall of the second bevel gear 17. A pawl 19 adapted to the ratchet 18 is provided on the outer wall of one end of the connecting rod 16. A first spring piece 20 adapted to the pawl 19 is provided on the outer wall of one end of the connecting rod 16.

[0022] During use, when the connecting pipe 7 rises and drives the winding disc 22 to rotate, the connecting rod 16 will be driven to rotate synchronously through the fixed rod 21. At this time, the ratchet 18 will exert a thrust on the pawl 19, causing the pawl 19 to rotate on the surface of the connecting rod 16 and squeeze the first spring piece 20. Then, under the action of the force, the first spring piece 20 will push the pawl 19 to reset, so that the second bevel gear 17 will not drive the connecting rod 16 to rotate when the winding disc 22 is paying out the wire. When the servo motor 3 drives the threaded sleeve 4 to rotate reversely to retract the connecting pipe 7, it will drive the connecting block 11 to rotate synchronously. Through the connection of the transmission belt 12 and the transmission block 14, the transmission block 14 will rotate synchronously with the connecting block 11, and drive the first bevel gear 15 to rotate through the connecting shaft 13. Through the meshing of the first bevel gear 15 and the second bevel gear 17, when the first bevel gear 15 rotates, it will drive the second bevel gear 17 to rotate synchronously. Through the meshing of the ratchet 18 and the pawl 19, when the second bevel gear 17 rotates, it will drive the connecting rod 16 and the winding disc 22 to rotate synchronously, and the winding of the rope 23 can be completed.

[0023] Please refer to Figures 6 - 8 , the detection mechanism includes a telescopic block 31 installed on the inner wall of the rotating sleeve 30, and a protection component for protecting the detection point. An electric cylinder 32 adapted to the telescopic block 31 is provided on the outer wall of one end of the rotating sleeve 30. A rotating shaft 33 is rotatably connected to the inner wall of one end of the telescopic block 31. A driving motor 34 adapted to the rotating shaft 33 is provided on the inner wall of the telescopic block 31. A universal ball 35 is fixedly connected to the outer wall of one end of the rotating shaft 33. A connecting sleeve 36 is rotatably connected to the outer wall of the universal ball 35. A probe 37 is installed on the outer wall of the connecting sleeve 36. A connecting plate 38 is fixedly connected to the outer wall of the probe 37. A permanent magnet coil 39 is provided on the inner wall of the connecting plate 38. A cylinder 40 is fixedly connected to the outer wall of one end of the rotating shaft 33. A guiding block 41 adapted to the probe 37 is provided on the outer wall of one end of the cylinder 40.

[0024] In use, when the rotating sleeve 30 is lifted to an appropriate height and the rotation angle is adjusted completely, the electric cylinder 32 is activated to push the telescopic block 31 out of the interior of the rotating sleeve 30, thereby moving the probe 37 near the detection point. When the angle of the detection point is not on the same horizontal line as the probe 37, an external power supply is connected to activate the drive motor 34 to drive the rotating shaft 33 to rotate inside the telescopic block 31. Then, the air cylinder 40 is activated to extend or contract, so that the air cylinder 40 pushes or pulls the probe 37 through the guiding block 41, and the probe 37 rotates on the surface of the universal ball 35 through the connecting sleeve 36, thus completing the adjustment of the angle of the probe 37. Then, in cooperation with the movement of the mobile trolley 1 or the pushing of the rotating sleeve 30 by the electric cylinder 32, the probe 37 can be driven to contact the detection point and complete the detection work. When detecting under normal power conditions, electric arcs are extremely likely to be generated, thereby damaging the detection point. However, the magnetic field generated by the permanent magnet coil 39 inside the connecting plate 38 can generate a blowing force on the electric arc, causing the electric arc to elongate, cool and finally extinguish.

[0025] Please refer to Figure 6 , Figure 7 , Figure 9 , Figure 11 , Figure 12 and Figure 14 , the protection component includes an air chamber 42 opened inside the mobile trolley 1 for storing sulfur hexafluoride gas. A hydraulic cylinder 43 is fixedly connected to the inner wall of the mobile trolley 1. A piston plate 44 adapted to the air chamber 42 is arranged on the outer wall of one end of the hydraulic cylinder 43. An air outlet groove 45 adapted to the air chamber 42 is arranged on the inner wall of the mobile trolley 1. A second spring piece 46 is fixedly connected to the inner wall of the air outlet groove 45. A first baffle 47 adapted to the air outlet groove 45 is arranged on the outer wall of the second spring piece 46. A first telescopic tube 48 adapted to the air outlet groove 45 is arranged at a position inside the connecting tube 7 on the outer wall of the mobile trolley 1, and one end of the first telescopic tube 48 passes through the top end of the connecting tube 7. A first air inlet groove 49 adapted to the first telescopic tube 48 is arranged on the outer wall of one side of the rotating sleeve 30. An air outlet conduit 50 adapted to the first air inlet groove 49 is arranged on the inner wall of the rotating sleeve 30. An air guide groove 52 adapted to the air outlet conduit 50 is arranged on the inner wall of the telescopic block 31. An air outlet annular groove 53 adapted to the air guide groove 52 is arranged on the outer wall of the rotating shaft 33. An air outlet passage 54 adapted to the air outlet annular groove 53 is arranged on the inner wall of the rotating shaft 33. An air outlet pipe 55 adapted to the air outlet passage 54 is arranged on the outer wall of the rotating shaft 33. An air outlet hole 56 adapted to the air outlet pipe 55 is arranged on the outer wall of the connecting plate 38.

[0026] During use, when detecting under abnormal power conditions, it is extremely easy to generate sparks and cause fires. During detection, the hydraulic cylinder 43 is used to push the piston plate 44 to slide inside the air chamber 42, thereby squeezing the sulfur hexafluoride gas inside the air chamber 42. After being squeezed, the sulfur hexafluoride gas will push the first baffle 47 to rotate around the connection point between the second spring piece 46 and the moving trolley 1, thus releasing the limit on the air outlet groove 45, allowing the sulfur hexafluoride gas to enter the inside of the first telescopic tube 48 through the air outlet groove 45. After the sulfur hexafluoride gas is discharged from the inside of the first telescopic tube 48, it will enter the inside of the air outlet conduit 50 through the first air inlet groove 49 and enter the inside of the air guide groove 52 through the air outlet conduit 50. Through the connection between the air guide groove 52 and the air outlet annular groove 53, the sulfur hexafluoride gas inside the air guide groove 52 enters the inside of the air outlet passage 54 through the air outlet annular groove 53, and finally enters the air outlet pipe 55 and blows towards the surface of the detection point through the air outlet hole 56 on the surface of the connecting plate 38, forming a protective layer on the surface of the detection point to isolate the air and prevent the sparks from reacting with the oxygen in the air.

[0027] Please refer to Figure 6 , Figure 7 , Figure 10 , Figure 11 , Figure 12 and Figure 15 , the protection component further includes a second air inlet groove 57 provided at a position above the air chamber 42. A third spring piece 58 is fixedly connected to the inner wall of the top end of the air chamber 42. A second baffle 59 adapted to the second air inlet groove 57 is provided on the outer wall of the third spring piece 58. A second telescopic tube 60 adapted to the second air inlet groove 57 is provided at a position inside the connecting tube 7 on the outer wall of the moving trolley 1, and one end of the second telescopic tube 60 passes through the top end of the connecting tube 7. An exhaust groove 61 adapted to the second telescopic tube 60 is provided on the outer wall of one side of the rotating sleeve 30. An air suction conduit 62 adapted to the exhaust groove 61 is provided on the inner wall of the rotating sleeve 30. An air suction groove 63 adapted to the air suction conduit 62 is provided on the inner wall of the telescopic block 31. An air suction annular groove 64 adapted to the air suction groove 63 is provided on the outer wall of the rotating shaft 33. An air suction passage 65 adapted to the air suction annular groove 64 is provided on the inner wall of the rotating shaft 33. An air suction pipe 66 adapted to the air suction passage 65 is provided on the outer wall of the rotating shaft 33. An air suction hole 67 adapted to the air suction pipe 66 is provided on the outer wall of the connecting plate 38.

[0028] During use, when the piston plate 44 squeezes the sulfur hexafluoride gas below, the space above the piston plate 44 will become larger, thereby generating a suction force externally through the second air intake groove 57, causing the sulfur hexafluoride gas blown towards the surface of the detection point to be sucked into the interior of the air intake channel 65 together with a part of the surrounding air through the air intake holes 67 and the air intake pipe 66 on the surface of the connecting plate 38. Then, it will enter the interior of the air intake conduit 62 through the air intake annular groove 64 and the air intake groove 63. After that, it will enter the interior of the second telescopic pipe 60 through the exhaust groove 61 and finally enter the interior of the second air intake groove 57 and exert pressure on the surface of the second baffle plate 59, thereby pushing the second baffle plate 59 to rotate around the connection point between the third spring piece 58 and the air chamber 42 as the center point, thus releasing the limit on the second air intake groove 57 and enabling the mixed gas of sulfur hexafluoride gas and air to enter the space above the piston plate 44 in the air chamber 42.

[0029] Please refer to Figures 9 - 16 , the protection component further includes an electric three-way valve 72 installed on the inner wall of the mobile trolley 1. An exhaust through groove 68 adapted to the electric three-way valve 72 is provided on the inner wall at the top end of the air chamber 42. A connecting spring 69 is fixedly connected to the inner wall of the exhaust through groove 68. One end of the connecting spring 69 is provided with a plugging plate 70 adapted to the exhaust through groove 68. A groove 71 is provided on the outer peripheral edge of the plugging plate 70 in the circumferential direction. An air outlet 73 adapted to the electric three-way valve 72 is provided on the outer wall of the mobile trolley 1. An air intake through groove 74 adapted to the electric three-way valve 72 is provided on the inner wall at the bottom end of the air chamber 42.

[0030] During use, after the mixed gas of sulfur hexafluoride gas and air enters the space above the piston plate 44 in the air chamber 42, after a period of precipitation, the sulfur hexafluoride gas sinks to the lower part, while the air moves to the upper part of the sulfur hexafluoride gas. At this time, control the electric three-way valve 72 to open the connection between the exhaust through groove 68 and the air outlet 73 and close the connection between the exhaust through groove 68 and the air intake through groove 74. Then, the hydraulic cylinder 43 pulls the piston plate 44 to squeeze the mixed gas of sulfur hexafluoride gas and air, making it enter the interior of the exhaust through groove 68 and pushing the plugging plate 70 to slide upward, causing the plugging plate 70 to squeeze the connecting spring 69, thereby releasing the limit on the groove 71 and enabling the mixed gas of sulfur hexafluoride gas and air to pass through the groove 71 and enter the interior of the exhaust through groove 68. Since the air is located above the sulfur hexafluoride gas, the air will first enter the interior of the exhaust through groove 68 and be discharged through the electric three-way valve 72 from the air outlet 73. When the sulfur hexafluoride gas enters the interior of the exhaust through groove 68, control the electric three-way valve 72 to close the connection between the exhaust through groove 68 and the air outlet 73 and open the connection between the exhaust through groove 68 and the air intake through groove 74, so that the sulfur hexafluoride gas entering the interior of the exhaust through groove 68 passes through the electric three-way valve 72 and is discharged into the position below the piston plate 44 in the air chamber 42 through the air intake through groove 74.

[0031] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A safety detection device for electric power engineering, comprising a mobile vehicle (1), and a laser rangefinder (2) mounted on the outer wall of the mobile vehicle (1), characterized in that: A servo motor (3) is mounted on the inner wall of the mobile vehicle (1); a threaded sleeve (4) is rotatably connected to the outer wall of one end of the servo motor (3); a plurality of groups of double-sided threaded tubes (5) which are sleeved together and can slide axially are arranged on the inner wall of the threaded sleeve (4); a threaded rod (6) is threadedly connected to the inner wall of the double-sided threaded tube (5); a connecting tube (7) is rotatably connected to the outer wall of one end of the threaded rod (6); a plurality of groups of telescopic sleeves (8) which are sleeved together and can slide axially are arranged on the outer wall of the connecting tube (7); a limiting mechanism for limiting the rotation of the threaded rod (6) is arranged on the inner and outer walls of the servo motor (3); a rotating sleeve (30) is fixedly connected to the outer wall of the top end of the threaded rod (6); and a detection mechanism for detecting electric power is arranged on the inner wall of the rotating sleeve (30).

2. A safety detection device for electric power engineering according to claim 1, characterized in that: The limiting mechanism comprises a connecting rod (16) dampingly connected to the inner wall of the moving trolley (1), and a connecting plate (9) arranged on the inner wall of the top end of the connecting tube (7) and fixedly connected to the threaded rod (6), the inner periphery of the connecting plate (9) being provided with a limiting hole (10) along the circumferential direction, the inner wall of the top end of the connecting tube (7) being provided with a limiting rod (24) adapted to the limiting hole (10), and the limiting rod (24) being dampingly connected to the connecting tube (7), the inner wall of the top end of the connecting tube (7) being provided with a limiting spring (25) adapted to the limiting rod (24), and the outer periphery of one end of the connecting rod (16) being provided with a limiting spring (25) adapted to the limiting rod (24), and the inner wall of the top end of the connecting tube (7) being provided with a limiting spring (25) adapted to the limiting rod (24). A fixing rod (21) is arranged in the circumferential direction, a rope (23) adapted to a winding drum (22) is fixedly connected to the outer wall of one end of the fixing rod (21), a limit rod (24) is arranged on the outer wall of the fixing rod (21), a slider (26) is slidably connected to the outer wall of the fixing rod (21), a slide groove (27) adapted to the slider (26) is arranged on the inner wall of the moving trolley (1), connecting holes (28) are arranged at equal intervals along the spiral on the outer wall of the moving trolley (1), one end of the connecting hole (28) is connected to the slide groove (27), and a latch (29) adapted to the slider (26) is arranged on the inner wall of the connecting hole (28).

3. A safety detection device for electric power engineering according to claim 2, characterized in that: The limiting mechanism further comprises a connecting block (11) arranged on the outer wall of the threaded sleeve (4), and a second bevel gear (17) arranged on the inner wall of one end of the connecting rod (16); a transmission belt (12) is rotatably connected to the outer wall of the connecting block (11); a connecting shaft (13) is rotatably connected to the inner wall of the moving trolley (1); a transmission block (14) adapted to the transmission belt (12) is arranged on the outer wall of one end of the connecting shaft (13); a first bevel gear (15) adapted to the second bevel gear (17) is arranged on the outer wall of one end of the connecting shaft (13); a ratchet (18) is fixedly connected to the outer wall of the second bevel gear (17); a pawl (19) adapted to the ratchet (18) is arranged on the outer wall of one end of the connecting rod (16); and a first spring sheet (20) adapted to the pawl (19) is arranged on the outer wall of one end of the connecting rod (16).

4. A safety detection device for electric power engineering according to claim 1, characterized in that: The detection mechanism comprises a telescopic block (31) mounted on the inner wall of a rotating sleeve (30), and a protection component for protecting a detection point; an electric cylinder (32) adapted to the telescopic block (31) is arranged on the outer wall at one end of the rotating sleeve (30); a rotating shaft (33) is rotatably connected to the inner wall at one end of the telescopic block (31); a driving motor (34) adapted to the rotating shaft (33) is arranged on the inner wall of the telescopic block (31); and a driving motor (34) adapted to the rotating shaft (33) is fixedly connected to the outer wall at one end of the rotating shaft (33). A universal ball (35) is provided, a connecting sleeve (36) is rotatably connected to the outer wall of the universal ball (35), a probe (37) is mounted on the outer wall of the connecting sleeve (36), a connecting plate (38) is fixedly connected to the outer wall of the probe (37), a permanent magnetic coil (39) is arranged on the inner wall of the connecting plate (38), a cylinder (40) is fixedly connected to the outer wall of one end of the rotating shaft (33), and a guide block (41) adapted to the probe (37) is arranged on the outer wall of one end of the cylinder (40).

5. A safety detection device for electric power engineering according to claim 4, characterized in that: The protective component comprises a gas chamber (42) for storing sulfur hexafluoride gas and opened inside the mobile trolley (1); a hydraulic cylinder (43) is fixedly connected to the inner wall of the mobile trolley (1); a piston plate (44) adapted to the gas chamber (42) is arranged on the outer wall of one end of the hydraulic cylinder (43); a gas outlet groove (45) adapted to the gas chamber (42) is arranged on the inner wall of the mobile trolley (1); a second spring sheet (46) is fixedly connected to the inner wall of the gas outlet groove (45); a first baffle plate (47) adapted to the gas outlet groove (45) is arranged on the outer wall of the second spring sheet (46); a first telescopic tube (48) adapted to the gas outlet groove (45) is arranged on the outer wall of the mobile trolley (1) at a position inside the connecting pipe (7); and one end of the first telescopic tube (48) passes through the connecting pipe (7). The top of the tube (7) is provided with a first air inlet groove (49) adapted to the first telescopic tube (48) on the outer wall of one side of the rotating sleeve (30), an air outlet duct (50) adapted to the first air inlet groove (49) is provided on the inner wall of the rotating sleeve (30), an air guide groove (52) adapted to the air outlet duct (50) is provided on the inner wall of the telescopic block (31), an air outlet annular groove (53) adapted to the air guide groove (52) is provided on the outer wall of the rotating shaft (33), an air outlet channel (54) adapted to the air outlet annular groove (53) is provided on the inner wall of the rotating shaft (33), an air outlet pipe (55) adapted to the air outlet channel (54) is provided on the outer wall of the rotating shaft (33), and an air outlet hole (56) adapted to the air outlet pipe (55) is provided on the outer wall of the connecting plate (38).

6. A safety detection device for electric power engineering according to claim 5, characterized in that: The protective component further comprises a second air inlet groove (57) arranged at a position above the air bin (42); a third spring sheet (58) is fixedly connected to the inner wall at the top end of the air bin (42); a second baffle (59) adapted to the second air inlet groove (57) is arranged on the outer wall of the third spring sheet (58); a second telescopic tube (60) adapted to the second air inlet groove (57) is arranged on the outer wall of the moving trolley (1) at a position inside the connecting tube (7); one end of the second telescopic tube (60) passes through the top end of the connecting tube (7); an exhaust groove (60) adapted to the second telescopic tube (60) is arranged on the outer wall of one side of the rotating sleeve (30); 1), an air intake duct (62) adapted to the exhaust groove (61) is provided on the inner wall of the rotating sleeve (30), an air intake groove (63) adapted to the air intake duct (62) is provided on the inner wall of the telescopic block (31), an air intake annular groove (64) adapted to the air intake groove (63) is provided on the outer wall of the rotating shaft (33), an air intake channel (65) adapted to the air intake annular groove (64) is provided on the inner wall of the rotating shaft (33), an air intake pipe (66) adapted to the air intake channel (65) is provided on the outer wall of the rotating shaft (33), and an air intake hole (67) adapted to the air intake pipe (66) is provided on the outer wall of the connecting plate (38).

7. A safety detection device for electric power engineering according to claim 5, characterized in that: The protection component also includes an electric three-way valve (72) mounted on the inner wall of the moving trolley (1); an exhaust groove (68) adapted for the electric three-way valve (72) is provided on the inner wall at the top end of the gas chamber (42); a connecting spring (69) is fixedly connected to the inner wall of the exhaust groove (68); a sealing plate (70) adapted for the exhaust groove (68) is provided at one end of the connecting spring (69); a groove (71) is provided along the circumferential direction on the outer periphery of the sealing plate (70); an air outlet (73) adapted for the electric three-way valve (72) is provided on the outer wall of the moving trolley (1); and an air inlet groove (74) adapted for the electric three-way valve (72) is provided on the inner wall at the bottom end of the gas chamber (42).

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