A safety detection device for electric power engineering

Abstract

The present invention discloses a safety detection device for power engineering, belonging to the technical field of power detection. The safety detection device for power engineering includes a mobile trolley, a limiting mechanism is arranged on the inner and outer walls of the servo motor, and a detection mechanism for detecting electricity is arranged on the inner wall of the rotating sleeve. 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 push the probe to rotate, which can realize multi-angle and multi-directional detection of the detection point. At the same time, the sulfur hexafluoride gas is blown to 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 of the spark with 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.

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 detection is 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, the 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, and when the insulation status is abnormal, the warning light turns red, warning the staff to carry out maintenance, which can effectively avoid direct contact between the staff and the power equipment and avoid electric shock incidents. However, this power equipment detection device can only extend horizontally to the detection point during operation, and there may be electric arcs or sparks during detection, which may damage 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 tubes 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 tube. One end of the outer wall of the threaded rod is rotatably connected to a connecting tube. Multiple groups of telescopic sleeves that are sleeved with each other and can axially slide are arranged on the outer wall of the connecting tube. 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] The detection mechanism includes a protection component for protecting the detection point. The protection component includes a gas chamber opened inside the moving trolley for storing sulfur hexafluoride gas. A hydraulic cylinder is fixedly connected to the inner wall of the moving 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 moving 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 moving 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 duct 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 duct 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.

[0007] 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 on the inner peripheral edge of the connecting disc in the circumferential direction. 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 on the outer peripheral edge of one end of the connecting rod in the circumferential direction. 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 sliding groove 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 in a spiral equidistant manner, and one end of the connecting hole is connected to the sliding groove. A pin adapted to the slider is arranged on the inner wall of the connecting hole.

[0008] 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 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 pawl is arranged on the outer wall of one end of the connecting rod.

[0009] Further, the detection mechanism includes a telescopic block installed on the inner wall of the rotating sleeve. An electric cylinder adapted to the telescopic block is provided on the outer wall at one end of the rotating sleeve. A rotating shaft is rotatably connected to the inner wall at one end of the telescopic block. A driving motor adapted to the rotating shaft is provided on the inner wall of the telescopic block. A universal ball is fixedly connected to the outer wall at 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 provided on the inner wall of the connecting plate. A cylinder is fixedly connected to the outer wall at one end of the rotating shaft. A guiding block adapted to the probe is provided on the outer wall at one end of the cylinder.

[0010] Further, the protection component further includes a second air inlet groove provided at a position above the air chamber. A third spring piece is fixedly connected to the inner wall at the top of the air chamber. A second baffle adapted to the second air inlet groove is provided on the outer wall of the third spring piece. A second telescopic tube adapted to the second air inlet groove is provided at a position inside the connecting tube on the outer wall of the moving trolley, and one end of the second telescopic tube passes through the top of the connecting tube. An exhaust groove adapted to the second telescopic tube is provided on the outer wall at one side of the rotating sleeve. An air suction conduit adapted to the exhaust groove is provided on the inner wall of the rotating sleeve. An air suction groove adapted to the air suction conduit is provided on the inner wall of the telescopic block. An air suction annular groove adapted to the air suction groove is provided on the outer wall of the rotating shaft. An air suction channel adapted to the air suction annular groove is provided on the inner wall of the rotating shaft. An air suction pipe adapted to the air suction channel is provided on the outer wall of the rotating shaft. An air suction hole adapted to the air suction pipe is provided 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 moving trolley. An exhaust through groove adapted to the electric three-way valve is provided on the inner wall at the top of the air chamber. A connecting spring is fixedly connected to the inner wall of the exhaust through groove. A blocking plate adapted to the exhaust through groove is provided at one end of the connecting spring. A groove is provided on the outer peripheral edge of the blocking plate in the circumferential direction. An air outlet adapted to the electric three-way valve is provided on the outer wall of the moving trolley. An air inlet through groove adapted to the electric three-way valve is provided on the inner wall at the bottom of the air 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 rotating threaded rod pushes the connecting pipe to an appropriate height, the limiting mechanism can release the connection between the threaded rod and the connecting pipe, causing the threaded rod to stop pushing the connecting pipe upward and driving the rotating sleeve to rotate, thereby adjusting the angle of the detection mechanism. Cooperating with the cylinder to drive the rotation of the probe, it can achieve multi-angle and multi-directional detection of the detection point. At the same time, by squeezing the piston plate, sulfur hexafluoride gas is blown onto the surface of the detection point and forms a protective layer to isolate the air, preventing the spark from reacting with 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;

[0014] Figure 2 is a schematic diagram of the internal structure of the mobile trolley of the present invention;

[0015] Figure 3 is a schematic diagram of the cooperating structure of the pawl and the ratchet of the present invention;

[0016] Figure 4 is a schematic diagram of the cooperating structure of the fixed rod and the winding disc of the present invention;

[0017] Figure 5 is a schematic diagram of the cooperating structure of the chute and the connecting hole of the present invention;

[0018] Figure 6 is a schematic diagram of the cooperating structure of the rotating sleeve and the telescopic block of the present invention;

[0019] Figure 7 is a schematic diagram of the cooperating structure of the universal ball and the connecting sleeve of the present invention;

[0020] Figure 8 is a schematic diagram of the cooperating structure of the cylinder and the guide block of the present invention;

[0021] Figure 9 is a schematic diagram of the cooperating structure of the hydraulic cylinder and the piston plate of the present invention;

[0022] 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;

[0023] 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;

[0024] 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;

[0025] Figure 13For the present invention Figure 2 Schematic enlarged structure diagram at position A in the present invention;

[0026] Figure 14 For the present invention Figure 9 Schematic enlarged structure diagram at position B in the present invention;

[0027] Figure 15 For the present invention Figure 9 Schematic enlarged structure diagram at position C in the present invention;

[0028] Figure 16 For the present invention Figure 9 Schematic enlarged structure diagram at position D in the present invention.

[0029] In the figure: 1, moving trolley; 2, laser rangefinder; 3, servo motor; 4, threaded sleeve; 5, double-sided threaded tube; 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, ratchet pawl; 20, first spring plate; 21, fixed rod; 22, winding disc; 23, rope; 24, limiting rod; 25, limiting spring; 26, slider; 27, chute; 28, connecting hole; 29, pin; 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, guiding block; 42, air chamber; 43, hydraulic cylinder; 44, piston plate; 45, air outlet groove; 46, second spring plate; 47, first baffle; 48, first telescopic pipe; 49, first air inlet groove; 50, air outlet duct; 52, air guiding 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 plate; 59, second baffle; 60, second telescopic pipe; 61, exhaust groove; 62, air suction duct; 63, air suction groove; 64, air suction annular groove; 65, air suction channel; 66, air suction pipe; 67, air suction hole; 68, exhaust through groove; 69, connecting spring; 70, plugging plate; 71, groove; 72, electric three-way valve; 73, air outlet; 74, air inlet through groove. Detailed implementation manners

[0030] 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.

[0031] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] 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. Multiple groups of double-sided threaded pipes 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 pipe 5. One end of the outer wall of the threaded rod 6 is rotatably connected to a connecting pipe 7. Multiple groups of telescopic sleeves 8 that are sleeved with each other and can axially slide are arranged on the outer wall of the connecting pipe 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. The top end of the outer wall of the threaded rod 6 is fixedly connected to a rotating sleeve 30. A detection mechanism for detecting electricity is arranged on the inner wall of the rotating sleeve 30.

[0033] When in 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 multiple groups of double-sided threaded pipes 5 and threaded rods 6 that are sleeved with each other to slide out upward in sequence and push the connecting pipe 7 to slide out upward. After the connecting pipe 7 completely slides out of the inside of the telescopic sleeve 8, with the continuous operation of the servo motor 3, it will drive multiple groups of telescopic sleeves 8 that are sleeved with each other to slide out upward, so as to lift the detection mechanism to a suitable height. At the same time, the limiting mechanism will release the connection between the threaded rod 6 and the connecting pipe 7, so that when the threaded rod 6 rotates again, it will not push the connecting pipe 7 to rise, but drive the rotating sleeve 30 to rotate on the surface of the connecting pipe 7, so as to adjust the angle of the detection mechanism.

[0034] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 13, the limiting mechanism includes a connecting rod 16 damping-connected to the inner wall of the moving trolley 1, and a connecting disk 9 provided on the inner wall of the top end of the connecting pipe 7 and fixedly connected to the threaded rod 6. A limiting hole 10 is provided along the circumferential direction of the inner peripheral edge of the connecting disk 9. A limiting rod 24 adapted to the limiting hole 10 is provided on the inner wall of the top end of the connecting pipe 7, and the limiting rod 24 is damping-connected to the connecting pipe 7. A limiting spring 25 adapted to the limiting rod 24 is provided on the inner wall of the top end of the connecting pipe 7. A fixing rod 21 is provided along the circumferential direction of the outer peripheral edge of one end of the connecting rod 16. A rope 23 adapted to the limiting rod 24 is fixedly connected to the outer wall of a winding disk 22 on the outer wall of one end of the fixing rod 21. A slider 26 is slidably connected to the outer wall of the fixing rod 21. A sliding groove 27 adapted to the slider 26 is provided on the inner wall of the moving trolley 1. Connecting holes 28 are arranged along a spiral at equal intervals on the outer wall of the moving trolley 1, and one end of the connecting hole 28 is connected to the sliding groove 27. A bolt 29 adapted to the slider 26 is provided on the inner wall of the connecting hole 28.

[0035] During use, after measuring the height of the detection point by the laser rangefinder 2, the bolt 29 is inserted into the appropriate connecting hole 28. When the connecting pipe 7 and the multiple mutually 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, the connecting pipe 7 can drive the limiting rod 24 to move upward synchronously when sliding upward. When the limiting rod 24 moves upward, the winding disk 22 will be pulled by the rope 23 to rotate inside the moving trolley 1 with the connecting rod 16 as the center. When the winding disk 22 rotates, the moving slider 26 will rotate synchronously through the fixing rod 21, so that one end of the slider 26 makes a spiral movement along the surface of the sliding groove 27, and through the guiding of the sliding groove 27 on the slider 26, the slider 26 will slide along the surface of the fixing rod 21 while moving along the surface of the sliding groove 27. When the slider 26 moves along the surface of the sliding groove 27 to contact the bolt 29, the bolt 29 will limit the continuous rotation of the winding disk 22 through the slider 26, thereby preventing the unwinding of the winding disk 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, so as to pull the limiting rod 24 to slide downward inside the connecting pipe 7 and compress 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 connecting disk 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, the bolt 29 is pulled out from the inside of the connecting hole 28, so as to release the limit on the slider 26. At this time, the limiting spring 25 is pushed by the force to drive the limiting rod 24 to rise and re-pass through the surface of the limiting hole 10, and re-limit the connecting disk 9.

[0036] Please refer to Figure 2 and Figure 3, the limiting mechanism further includes a connecting 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 connecting block 11, and 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 provided on the outer wall of one end of the connecting shaft 13, and a first bevel gear 15 adapted to the second bevel gear 17 is provided 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, and a ratchet 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 ratchet pawl 19 is provided on the outer wall of one end of the connecting rod 16.

[0037] During use, when the connecting pipe 7 rises and drives the winding disc 22 to rotate, it will drive the connecting rod 16 to rotate synchronously through the fixing rod 21. At this time, the ratchet 18 will exert a thrust on the ratchet pawl 19, causing the ratchet pawl 19 to rotate on the surface of the connecting rod 16 and squeeze the first spring piece 20. Then, the first spring piece 20 is pushed by the force to reset the ratchet pawl 19. Thus, when the winding disc 22 is paying out the line, the second bevel gear 17 will not drive the connecting rod 16 to rotate. 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, and 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, and through the meshing of the ratchet 18 and the ratchet 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 work of the rope 23 can be completed.

[0038] 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, and 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.

[0039] 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 moving 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. During detection when the power is normal, 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 arcs, causing the arcs to elongate, cool, and finally go out.

[0040] 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 moving trolley 1 for storing sulfur hexafluoride gas. A hydraulic cylinder 43 is fixedly connected to the inner wall of the moving 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 moving 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 pipe 48 adapted to the air outlet groove 45 is arranged at the position of the outer wall of the moving trolley 1 inside the connecting pipe 7, and one end of the first telescopic pipe 48 passes through the top of the connecting pipe 7. A first air inlet groove 49 adapted to the first telescopic pipe 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 guiding 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 guiding 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.

[0041] 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 gas chamber 42, thereby squeezing the sulfur hexafluoride gas inside the gas 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 mobile 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 channel 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, and forms 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.

[0042] 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 the position above the gas chamber 42. A third spring piece 58 is fixedly connected to the inner wall of the top end of the gas 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 the position inside the connecting tube 7 on the outer wall of the mobile 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 one side outer wall of the rotary sleeve 30. An air suction conduit 62 adapted to the exhaust groove 61 is provided on the inner wall of the rotary 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 rotary shaft 33. An air suction channel 65 adapted to the air suction annular groove 64 is provided on the inner wall of the rotary shaft 33. An air suction pipe 66 adapted to the air suction channel 65 is provided on the outer wall of the rotary 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.

[0043] 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 to the outside through the second air inlet groove 57, causing the sulfur hexafluoride gas blown onto the surface of the detection point to be sucked into the interior of the suction channel 65 together with a part of the surrounding air through the suction holes 67 on the surface of the connecting plate 38 and the suction pipe 66. Then, it will enter the interior of the suction conduit 62 through the suction annular groove 64 and the suction groove 63, and then enter the interior of the second telescopic pipe 60 through the exhaust groove 61, and finally enter the interior of the second air inlet groove 57 and exert pressure on the surface of the second baffle 59, thereby pushing the second baffle 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 inlet 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.

[0044] 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 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 inlet through groove 74 adapted to the electric three-way valve 72 is provided on the inner wall at the bottom of the air chamber 42.

[0045] 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 bottom, and 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 inlet through groove 74. Then, the hydraulic cylinder 43 pulls the piston plate 44 to squeeze the mixed gas of sulfur hexafluoride gas and air, so that it enters the interior of the exhaust through groove 68 and pushes 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 inlet 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 inlet through groove 74.

[0046] 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 should be covered within the protection scope of the present invention.

Claims

1. A safety detection device for electric power engineering, comprising a mobile trolley and a laser rangefinder installed on the outer wall of the mobile trolley, characterized in that: A servo motor is installed on the inner wall of the mobile trolley. A threaded sleeve is rotatably connected to the outer wall of one end of the servo motor. A plurality of 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. A connecting pipe is rotatably connected to the outer wall of one end of the threaded rod. A plurality of 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 outer wall of the top end of the threaded rod. A detection mechanism for detecting electricity is arranged on the inner wall of the rotating sleeve; The detection mechanism includes a protection component for protecting the detection point. 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 pipe 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 pipe passes through the top end of the connecting pipe. A first air inlet groove adapted to the first telescopic pipe is arranged on the outer wall of one side of the rotating sleeve. An air outlet duct adapted to the first air inlet groove is arranged on the inner wall of the rotating sleeve. An air guide groove adapted to the air outlet duct 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 rotating shaft. An air outlet channel adapted to the air outlet annular groove is arranged on the inner wall of the rotating shaft. An air outlet pipe adapted to the air outlet channel is arranged on the outer wall of the rotating shaft. An air outlet hole adapted to the air outlet pipe is arranged on the outer wall of the connecting plate.

2. The safety detection device for electric power engineering according to claim 1, characterized in that: The limiting mechanism includes a connecting rod damping-connected to the inner wall of the mobile trolley, and a connecting disk arranged on the inner wall of the top end of the connecting pipe and fixedly connected to the threaded rod. Limiting holes are arranged on the inner peripheral edge of the connecting disk in the circumferential direction. A limiting rod adapted to the limiting holes 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. Fixing rods are arranged on the outer peripheral edge of one end of the connecting rod in the circumferential direction. A rope adapted to the limiting rod is fixedly connected to the outer wall of a winding disk 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 mobile trolley. Connecting holes are arranged on the outer wall of the mobile trolley in a spiral equidistant manner, and one end of the connecting hole is connected to the chute. A bolt adapted to the slider is arranged on the inner wall of the connecting hole.

3. The safety detection device for power engineering according to claim 2, characterized in that: The limit mechanism further includes a connection block provided on the outer wall of the threaded sleeve, and a second bevel gear provided on the inner wall of one end of the connecting rod. A transmission belt is rotatably connected to the outer wall of the connection block. A connection shaft is rotatably connected to the inner wall of the moving trolley. A transmission block adapted to the transmission belt is provided on the outer wall of one end of the connection shaft. A first bevel gear adapted to the second bevel gear is provided on the outer wall of one end of the connection shaft. A ratchet is fixedly connected to the outer wall of the second bevel gear. A ratchet pawl adapted to the ratchet is provided on the outer wall of one end of the connecting rod. A first spring piece adapted to the ratchet pawl is provided on the outer wall of one end of the connecting rod.

4. A safety detection device for power engineering according to claim 1, characterized in that: The detection mechanism includes a telescopic block installed on the inner wall of the rotating sleeve. An electric cylinder adapted to the telescopic block is provided 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 provided 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 provided 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 provided on the outer wall of one end of the cylinder.

5. A safety detection device for electric power engineering according to claim 4, characterized in that: The protection component further includes a second air inlet groove provided at a position above the air chamber. A third spring piece is fixedly connected to the top inner wall of the air chamber. A second baffle adapted to the second air inlet groove is provided on the outer wall of the third spring piece. A second telescopic tube adapted to the second air inlet groove is provided at a position inside the connecting tube on the outer wall of the moving trolley, and one end of the second telescopic tube passes through the top of the connecting tube. An exhaust groove adapted to the second telescopic tube is provided on the outer wall of one side of the rotating sleeve. An air suction conduit adapted to the exhaust groove is provided on the inner wall of the rotating sleeve. An air suction groove adapted to the air suction conduit is provided on the inner wall of the telescopic block. An air suction annular groove adapted to the air suction groove is provided on the outer wall of the rotating shaft. An air suction passage adapted to the air suction annular groove is provided on the inner wall of the rotating shaft. An air suction pipe adapted to the air suction passage is provided on the outer wall of the rotating shaft. An air suction hole adapted to the air suction pipe is provided on the outer wall of the connecting plate.

6. The safety detection device for electric power engineering according to claim 5, characterized in that: The protection component further includes an electric three-way valve installed on the inner wall of the moving trolley. An exhaust through groove adapted to the electric three-way valve is provided on the top inner wall of the air 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 provided at one end of the connecting spring. A groove is provided on the outer peripheral edge of the sealing plate in the circumferential direction. An air outlet adapted to the electric three-way valve is provided on the outer wall of the moving trolley. An air inlet through groove adapted to the electric three-way valve is provided on the bottom inner wall of the air chamber.

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