Distribution line fault patrol device

Abstract

The invention discloses a distribution line fault patrol device, which belongs to the technical field of cable leakage detection, and comprises a shell, a walking wheel, a gear motor, a pressing wheel, a pressing mechanism, a flexible coil current clamp meter, a docking mechanism and an annular positioning mechanism, according to the invention, through driving of the gear motor, two kinds of fault patrol processing of electric leakage detection patrol and flaw detection patrol can be carried out on the cable, and through arrangement of the annular positioning mechanism, rotation positioning processing can be carried out on the cable, so that the stability of moving and advancing of the casing and the flexible coil current clamp meter on the cable is improved; according to the flexible coil current clamp meter, the cable leakage detection accuracy of the flexible coil current clamp meter is effectively improved, the surface of the cable can be cleaned, and the ultrasonic flaw detection probe is matched to perform flaw detection treatment on the cable, so that the rotary flaw detection treatment of the ultrasonic flaw detection probe is realized, and the flaw detection patrol accuracy is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cable leakage detection, and particularly relates to a distribution line fault inspection device. Background Art

[0002] A distribution line refers to a line that delivers electricity from a step-down substation to a distribution transformer or from a distribution substation to a power-consuming unit. The wires installed in the distribution line are the main carriers for transmitting electricity. Regular inspection of the distribution line can master the operating conditions of the line, timely discover defects and potential hazards threatening the safe operation of the line along the line, thereby improving the power supply reliability and reducing the occurrence of line accidents. High-altitude erection of lines is a relatively common method in the distribution system. For high-altitude distribution lines, the distribution lines installed in the wild are prone to leakage due to external forces such as weather, and need to be checked in time.

[0003] In the prior art, for current faults in distribution lines, current detection devices such as flexible coil current clamps can be used to detect leakage on the outer surface of the distribution line. When inspecting the distribution line for leakage faults, the leakage detection device is generally installed on the cable, and the insulation performance of the cable is detected during the movement of the leakage detection device on the cable, so as to realize the inspection of leakage faults on the cable surface. However, in the actual application process, since the flexible coil current clamp is installed in a non-contact manner around the cable, during its movement on the cable surface, the position of the flexible coil around the cable will deviate due to insufficient device stability, resulting in uneven electromagnetic distribution at the flexible coil, thereby affecting the accuracy of the leakage current detection on the cable surface. Therefore, there is an urgent need for a distribution line fault inspection device that can overcome the above defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a distribution line fault inspection device to solve the problem that the accuracy of the leakage detection on the cable surface is reduced due to insufficient stability when the fault inspection device walks on the cable surface as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A distribution line fault inspection device, including a housing, further including:

[0006] Traveling wheels, the traveling wheels are arranged on the inner wall of the top of the housing, a reduction motor coaxially connected to the traveling wheels is arranged on the inner wall of the top of the housing, two pressing wheels are symmetrically distributed below the traveling wheels, and a pressing mechanism cooperating with the two pressing wheels is arranged inside the housing;

[0007] The flexible coil current clamp is arranged behind the walking wheel and fixed to the machine housing. Inside the machine housing, there is a docking mechanism for the flexible coil to surround the cable periphery, and an annular positioning mechanism is arranged between the flexible coil current clamp and the walking wheel.

[0008] It should be noted in the solution that the pressing mechanism includes:

[0009] Track frames, there are two track frames which are installed in parallel inside the machine housing. A support member is arranged below the two track frames. Two symmetrically distributed U-shaped frames are slidably connected inside the two track frames, and two walking wheels are respectively rotatably installed inside the U-shaped frames;

[0010] The pressing plate is fixed to the top surface of the track frame arranged away from the inner wall of the machine housing.

[0011] As a preferred implementation manner, the support member includes:

[0012] Vertical rods, there are four vertical rods which all slidably penetrate the bottom surface of the machine housing. The top ends of the vertical rods are fixed to the bottom surface of the track frame, and a counterweight plate is fixed to the bottom ends of the four vertical rods together;

[0013] Lifting springs, there are four lifting springs which are respectively sleeved on the peripheries of the four vertical rods, and the two ends of the lifting spring are respectively fixed to the opposite surfaces of the track frame and the machine housing.

[0014] Furthermore, it is worth noting that the docking mechanism includes:

[0015] The limiting ring is fixed to the inner bottom wall of the machine housing. An incomplete gear ring is rotatably sleeved on the outer surface of the limiting ring. A plurality of positioning rings are fixed on the outer surface of the incomplete gear ring at equal angles. The flexible coil of the flexible coil current clamp is fixed inside the plurality of positioning rings;

[0016] The driving gear is arranged above the incomplete gear ring and is meshed with the incomplete gear ring. A driving motor coaxially connected with the driving gear is arranged inside the machine housing.

[0017] Even further, it should be noted that the annular positioning mechanism includes:

[0018] Fixing frames, there are two fixing frames which are symmetrically fixed to the inner wall of the machine housing. The driving motor is installed on the outer surface of the upper fixing frame. Two annular gear rings are rotatably connected to the inner walls of each fixing frame, and two cleaning rods are rotatably connected to the inner surfaces of each annular gear ring;

[0019] Rotating gears, there are two rotating gears which are respectively rotatably installed on the inner walls of the two fixing frames. The rotating gears are meshed with the adjacent annular gear rings, and a transmission member for the two rotating gears to rotate synchronously is arranged inside the machine housing.

[0020] As a preferred embodiment, the transmission member includes:

[0021] An incomplete gear is rotatably mounted on the inner wall of the casing. A U-shaped tooth frame is meshed and connected to the periphery of the incomplete gear. L-shaped rack bars are fixed on both sides of the U-shaped tooth frame. The L-shaped rack bars slidably penetrate through the outer surface of the casing and are meshed and connected to the adjacent rotating gear.

[0022] A worm gear is coaxially fixed with the incomplete gear. The output end of the reduction motor is coaxially connected with a worm, and the worm is meshed and connected with the worm gear.

[0023] As a preferred embodiment, an ultrasonic flaw detector probe is arranged in the middle of the inner surface of the annular tooth ring, and the ultrasonic flaw detector probe is attached to the outer surface of the cable.

[0024] As a preferred embodiment, the pressing mechanism further includes:

[0025] A guide sleeve is fixed on the inner wall of the casing. Two symmetrically distributed L-shaped rods slidably penetrate through the top surface of the guide sleeve. A connecting rod is hinged between the L-shaped rod and the adjacent U-shaped frame. A limiting ring is jointly fixed at the tops of the two L-shaped rods.

[0026] A rotating disk is coaxially connected with the output end of the reduction motor. A rotating column is fixed on the outer surface of the rotating disk. The limiting ring is sleeved on the outer surface of the rotating column.

[0027] Compared with the prior art, a power distribution line fault inspection device provided by the present invention has at least the following beneficial effects:

[0028] (1). Through the mutual cooperation of the pressing and positioning mechanism and the annular positioning mechanism, the traveling wheels and the two pressing wheels can perform triangular pressing and positioning on the cable, and at the same time, the annular positioning mechanism performs annular positioning on the outer surface of the cable, thereby greatly improving the stability of the casing during positioning on the cable surface. Through the setting of the docking mechanism, the flexible coil current clamp meter can be rotated and docked, and convenient positioning before the flexible coil current clamp meter detects and inspects the cable for leakage is completed. The operation is simple, time-saving and labor-saving.

[0029] (2) By driving the reduction motor, two types of fault inspection and treatment can be achieved, namely, leakage detection inspection and flaw detection inspection of the cable. At the same time, through the setting of the annular positioning mechanism, the cable can be rotated and positioned, thereby improving the stability of the movement of the machine shell and the flexible coil current clamp meter along the cable, effectively improving the accuracy of the leakage detection of the flexible coil current clamp meter for the cable. In addition, the surface of the cable can be cleaned, and in cooperation with the ultrasonic flaw detection probe for flaw detection of the cable, rotational flaw detection of the ultrasonic flaw detection probe can be achieved, effectively improving the accuracy of the flaw detection inspection.

[0030] (3) When the pressing plate is squeezed into the surface of the cable, through the setting of the pressing mechanism, the two U-shaped frames move synchronously towards the center in the track frame, that is, the pressing wheels move closer to each other while moving downward. At this time, when the cable is squeezed into the middle of the two pressing wheels and the walking wheels, the convenience of its operation is improved to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is a schematic diagram of the structure at the flexible coil current clamp meter of the present invention;

[0033] Figure 3 is a schematic diagram of the structure at the docking mechanism of the present invention;

[0034] Figure 4 is a schematic diagram of a partial structure at the support member of the present invention;

[0035] Figure 5 is a schematic diagram of a partial structure at the reduction motor of the present invention;

[0036] Figure 6 of the present invention Figure 5 is an enlarged schematic diagram of area A;

[0037] Figure 7 is a schematic diagram of a partial structure at the pressing mechanism of the present invention;

[0038] Figure 8 of the present invention Figure 7 is an enlarged schematic diagram of area B

[0039] Figure 9 is a schematic diagram of a partial structure at the ultrasonic flaw detection probe of the present invention.

[0040] In the figure: 1. Machine housing; 2. Traveling wheels; 3. Reducing motor; 4. Pressing wheels; 5. Pressing mechanism; 51. Rail frame; 52. Support member; 521. Upright rod; 522. Counterweight plate; 523. Lifting spring; 53. U-shaped frame; 54. Pressing plate; 55. Guide sleeve; 56. L-shaped rod; 57. Connecting rod; 58. Limit ring; 59. Rotating disk; 510. Rotating column; 6. Flexible coil current clamp meter; 7. Docking mechanism; 71. Limit ring; 72. Incomplete gear ring; 73. Positioning ring; 74. Driving gear; 75. Driving motor; 8. Ring-shaped positioning mechanism; 81. Fixed frame; 82. Ring-shaped gear ring; 83. Cleaning rod; 84. Rotating gear; 85. Transmission member; 851. Incomplete gear; 852. U-shaped tooth frame; 853. L-shaped rack bar; 854. Worm gear; 855. Worm; 9. Ultrasonic flaw detector probe. Detailed implementation manners

[0041] The present invention will be further described below in conjunction with embodiments.

[0042] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0043] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms such as "including" or "comprising" used in the present disclosure mean that the elements or objects appearing before the term cover the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" do not limit to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0044] Embodiment 1:

[0045] Please refer to Figures 1-9 , the present invention provides a power distribution line fault inspection device, including a machine housing 1, and further including traveling wheels 2. The traveling wheels 2 are arranged on the inner wall of the top of the machine housing 1. A reducing motor 3 coaxially connected to the traveling wheels 2 is arranged on the inner wall of the top of the machine housing 1. Two symmetrically distributed pressing wheels 4 are arranged below the traveling wheels 2. A pressing mechanism 5 cooperating with the two pressing wheels 4 is arranged inside the machine housing 1;

[0046] It should be noted that the reduction motor 3 adopts a spur gear transmission method to achieve the purpose of speed reduction, and it is installed above the traveling wheel 2 through a mounting bracket;

[0047] When installing the machine shell 1 on the outer surface of the cable to be inspected, first, the pressing mechanism 5 is squeezed by the surface of the cable, so that the distance between the traveling wheel 2 and the pressing wheel 4 increases. By squeezing the pressing mechanism 5 through the outer surface of the cable, until the traveling wheel 2 and the two pressing wheels 4 on the machine shell 1 are isosceles triangle distributed on the outer surface of the cable. At this time, the outer surface of the cable releases the extrusion effect on the pressing mechanism 5. Through the reset action of the pressing mechanism 5, the pressing and positioning effects of the traveling wheel 2 and the two pressing wheels 4 on the outer surface of the cable are completed. Subsequently, the traveling wheel 2 is driven to rotate by the reduction motor 3. Through the frictional force between the traveling wheel 2 and the outer surface of the top of the cable, the machine shell 1 is moved and advanced around the cable;

[0048] The flexible coil current clamp 6 is arranged behind the traveling wheel 2 and fixed to the machine shell 1. There is a docking mechanism 7 inside the machine shell 1 for the flexible coil to surround the cable. There is an annular positioning mechanism 8 between the flexible coil current clamp 6 and the traveling wheel 2;

[0049] It should be noted that the flexible coil current clamp 6 is based on the principle of electromagnetic induction. When an alternating current passes through the measured cable, an alternating magnetic field will be generated around it. The flexible coil surrounds the cable to form a non-contact installation. The alternating magnetic field passes through the coil and induces an electromotive force in the coil. The signal processing circuit processes and converts the induced electromotive force, so as to realize the measurement of the alternating current and transmit its data to the ground staff, so as to realize the leakage detection and inspection and disposal of the outer surface of the cable;

[0050] It should be noted that before the cable is installed with the traveling wheel 2 and the pressing wheel 4, at this time, the flexible coil in the flexible coil current clamp 6 is arranged in an open state through the docking mechanism 7, and its opening is adapted to the size of the extrusion and entry area formed by the traveling wheel 2 and the pressing wheel 4, so as to facilitate the pressing and installation of the cable by the traveling wheel 2 and the pressing wheel 4. Subsequently, through the drive of the docking mechanism 7, the flexible coil can be driven to rotate around the cable and form a docking process with the flexible coil current clamp 6, that is, the flexible coil is closed and concentrically distributed around the cable, ensuring the smoothness of the flexible coil when traveling on the outer surface of the cable with the traveling wheel 2, reducing the possibility of the flexible coil shifting, and thus ensuring the accuracy of the data when detecting and inspecting the leakage of the cable;

[0051] The arrangement of the annular positioning mechanism 8 enables it to move synchronously with the machine housing 1 during its movement, further enhancing the stability of the walking wheels 2 and the pressing wheels 4 when walking on the surface of the cable.

[0052] Furthermore, as Figures 1-7 shown, it is worth specifically noting that the pressing mechanism 5 includes a track frame 51. There are two track frames 51 which are arranged in parallel and installed inside the machine housing 1. A support member 52 is commonly provided below the two track frames 51. Two symmetrically distributed U-shaped frames 53 are slidably connected inside the two track frames 51. Two walking wheels 2 are respectively rotatably installed inside the U-shaped frames 53;

[0053] A pressing plate 54 is fixed to the top surface of the track frame 51 which is arranged away from the inner wall of the machine housing 1;

[0054] It should be noted that the outer surface of the pressing plate 54 facing the non-opening end of the machine housing 1 is arranged in an arc shape, thereby improving the convenience of extruding the cable against the outer surface of the pressing plate 54, so that the walking wheels 2 and the pressing wheels 4 can better press and position the cable;

[0055] It should be noted that by extruding the pressing plate 54 through the outer surface of the cable, the support member 52 is compressed at the bottom of the machine housing 1, so that the height difference between the pressing wheel 4 and the walking wheel 2 located on the U-shaped frame 53 increases until the height difference is greater than the outer diameter of the cable surface. When the cable enters between the walking wheels 2 and the pressing wheels 4, due to the cable releasing the extrusion on the pressing plate 54, at this time, through the resetting action of the support member 52, the outer surfaces of the walking wheel 2 and the two pressing wheels 4 respectively contact different positions on the outer surface of the cable, thus completing the preliminary positioning and installation of the pressing wheel 4 and the walking wheel 2 on the cable.

[0056] Furthermore, as Figure 1 and Figure 4 shown, it is worth specifically noting that the support member 52 includes a vertical rod 521. There are four vertical rods 521 which all slidably penetrate the bottom surface of the machine housing 1. The top ends of the vertical rods 521 are fixed to the bottom surface of the track frame 51. A counterweight plate 522 is commonly fixed to the bottom ends of the four vertical rods 521;

[0057] Four jacking springs 523 are provided and respectively sleeved around the four vertical rods 521. The two ends of the jacking springs 523 are respectively fixed to the opposite surfaces of the track frame 51 and the machine housing 1;

[0058] It should be noted that the vertical cross-section of the counterweight plate 522 is arranged in an inverted L shape, which is used to counterweight the machine housing 1, thereby improving the movement balance of the machine housing 1 around the cable;

[0059] It should be noted that when the pressing plate 54 is extruded on the surface of the cable, at this time, the vertical rod 521 drives the track frame 51 and the U-shaped frame 53 to move downward at the bottom of the casing 1, and drives the jacking spring 523 to be compressed. After the outer surface of the cable is aligned with the traveling wheels 2 and the two pressing wheels 4, at this time, since the cable releases the extrusion effect on the pressing plate 54, through the elastic reset effect of the four jacking springs 523, at this time, the vertical rod 521, the track frame 51 and the U-shaped frame 53 are reset, so that the outer surfaces of the two pressing wheels 4 press the outer surface of the bottom of the cable, and form an isosceles triangle-shaped triangular pressing and positioning treatment with the traveling wheels 2, greatly improving the stability of the cable inspection device when traveling on the cable surface.

[0060] Furthermore, as Figure 1 , Figure 2 , Figure 3 and Figure 9 shown, specifically, the docking mechanism 7 includes a limit ring 71, the limit ring 71 is fixed to the inner wall of the bottom of the casing 1, an incomplete gear ring 72 is rotatably sleeved on the outer surface of the limit ring 71, and a plurality of positioning rings 73 are fixed on the outer surface of the incomplete gear ring 72 and are distributed at equal angles; the flexible coil of the flexible coil current clamp 6 is fixed inside the plurality of positioning rings 73;

[0061] a driving gear 74, the driving gear 74 is arranged above the incomplete gear ring 72 and is meshed with the incomplete gear ring 72, and a driving motor 75 coaxially connected with the driving gear 74 is arranged inside the casing 1;

[0062] It should be noted that the incomplete gear ring 72 and the cable are coaxially distributed. At this time, the flexible coil on the flexible coil current clamp 6 is fixed on the positioning ring 73 on the incomplete gear ring 72, so that the flexible coil and the outer surface of the cable are coaxially distributed, effectively ensuring the uniformity of the electromagnetic distribution at the flexible coil when the flexible coil current clamp 6 subsequently detects the leakage of the cable, and effectively improving the accuracy of the subsequent measurement and detection;

[0063] When the flexible coil is in an open state, at this time, the incomplete gear ring 72 moves to the end of the arc section of the limit ring 71, so that the opening size at the flexible coil is adapted to the extrusion position size at the pressing wheel 4 and the traveling wheel 2, effectively avoiding the interference phenomenon between the flexible coil and the incomplete gear ring 72 and the cable surface when the outer surface of the cable enters the pressing wheel 4 and the traveling wheel 2 by extrusion;

[0064] It should be noted that when the walking wheel 2 and the two pressing wheels 4 are tightly installed on the outer surface of the cable, at this time, driven by the driving motor 75, the driving gear 74 can be driven to rotate. Through the meshing transmission of the driving gear 74 and the incomplete gear ring 72, the incomplete gear ring 72 can be guided by the limiting ring 71, so that the incomplete gear ring 72, the positioning ring 73 and the flexible coil rotate in an arc, so that the flexible coil is docked with the clamp meter, and the flexible coil is coaxially distributed with the outer surface of the cable, thus ensuring the uniformity of the electromagnetic distribution at the flexible coil and effectively ensuring the accuracy of the subsequent leakage current detection.

[0065] Further, as Figure 2 , Figure 3 , Figure 5 , Figure 7 and Figure 9 shown, specifically, the annular positioning mechanism 8 includes a fixed frame 81. There are two fixed frames 81, which are symmetrically fixed on the inner wall of the machine shell 1. The driving motor 75 is installed on the outer surface of the upper fixed frame 81. The inner wall of each fixed frame 81 is rotatably connected with an annular gear ring 82, and the inner surface of each annular gear ring 82 is rotatably connected with two cleaning rods 83;

[0066] The rotating gears 84 are provided with two, which are respectively rotatably installed on the inner walls of the two fixed frames 81. The rotating gears 84 are meshed with the adjacent annular gear rings 82. A transmission member 85 for synchronously rotating the two rotating gears 84 is arranged inside the machine shell 1;

[0067] It should be noted that when the cable is not installed with the walking wheel 2 and the pressing wheel 4, at this time, the two annular gear rings 82 are arranged in a fitting manner. At this time, the radian size between the two cleaning rods 83 at the position far from the fitting position of the annular gear rings 82 is adapted to the initial opening size of the flexible coil, so as to effectively improve the convenience of the cable surface entering between the four cleaning rods 83 for arc surface positioning. In addition, the cleaning rod 83 is made of a sponge rod, and when it contacts the cable surface, it generates a certain extrusion, thus further improving the convenience of the cable during preliminary positioning;

[0068] It should be noted that after the walking wheel 2 and the pressing wheel 4 are pressed and positioned on the cable surface through the pressing mechanism 5 and the docking mechanism 7 rotates and positions the flexible coil of the flexible coil current clamp 6, at this time, the deceleration motor 3 drives the walking wheel 2 to move on the cable surface. At this time, the deceleration motor 3 drives the transmission member 85 to move synchronously, so that the two rotating gears 84 can move synchronously. Through the meshing transmission of the rotating gear 84 and the annular gear ring 82, the two annular gear rings 82 can rotate synchronously and reciprocally in opposite directions, so that the four cleaning rods 83 rotate reciprocally on the cable surface, further improving the stability of the walking wheel 2 when moving on the cable surface. At the same time, the reciprocating rotation of the cleaning rod 83 can also clean the cable surface to a certain extent.

[0069] Further, as Figure 4 , Figure 6 , Figure 7 and Figure 8 shown, it is specifically noted that the transmission member 85 includes an incomplete gear 851, the incomplete gear 851 is rotatably installed on the inner wall of the housing 1, the outer periphery of the incomplete gear 851 is meshed and connected with a U-shaped tooth frame 852, and L-shaped rack bars 853 are fixed on both sides of the U-shaped tooth frame 852. The L-shaped rack bars 853 slide through the outer surface of the housing 1 and are meshed and connected with the adjacent rotating gear 84;

[0070] a worm gear 854, the worm gear 854 is coaxially fixed with the incomplete gear 851, the output end of the deceleration motor 3 is coaxially connected with a worm 855, and the worm 855 is meshed and connected with the worm gear 854;

[0071] It should be noted that the deceleration motor 3 drives the worm 855 to rotate. Through the meshing transmission of the worm 855 and the worm gear 854, the worm gear 854 and the incomplete gear 851 rotate synchronously. At this time, through the meshing of the incomplete gear 851 and the U-shaped tooth frame 852, the U-shaped tooth frame 852 reciprocates on the housing 1, that is, drives the two L-shaped rack bars 853 to move synchronously and reciprocally. Through the meshing transmission of the L-shaped rack bar 853 and the rotating gear 84, the two rotating gears 84 can move synchronously and reciprocally in opposite directions.

[0072] Further, as Figure 9 shown, it is specifically noted that an ultrasonic flaw detector probe 9 is arranged in the middle of the inner surface of the annular gear ring 82, and the ultrasonic flaw detector probe 9 is attached to the outer surface of the cable;

[0073] It should be noted that the ultrasonic flaw detector probe 9 is connected to a flaw detector, responsible for transmitting the electrical signal generated by the ultrasonic flaw detector probe 9 to the flaw detector for processing and display, and transmitting the data to the ground staff, so as to realize the inspection and disposal of the flaw detection of the cable outer surface.

[0074] It should be noted that the two ultrasonic probes are arranged to rotate reciprocally synchronously with the two annular gear rings 82, so as to form a rotational flaw detection treatment on the outer surface of the cable. Combined with the cleaning effect of the cleaning rod 83 on the cable surface, the accuracy of the ultrasonic flaw detection probe 9 for flaw detection on the outer surface of the cable is further improved.

[0075] This embodiment has the following working process: When inspecting the cable for faults, the machine housing 1 is brought close to the cable to be inspected. At this time, due to the extrusion effect between the cable and the pressing mechanism 5, the pressing mechanism 5 deforms until the cable enters between the traveling wheel 2 and the two pressing wheels 4. At this time, the cable releases the extrusion on the pressing mechanism 5, and the pressing mechanism 5 can drive the two pressing wheels 4 to abut and press the outer surface of the bottom of the cable, forming a triangular pressing and positioning treatment of the cable by the traveling wheel 2 and the two pressing wheels 4. At this time, the annular positioning mechanism 8 also synchronously completes the rotational positioning treatment of the cable surface;

[0076] Through the drive of the docking mechanism 7, the flexible coil in the flexible coil current clamp meter 6 can be rotationally docked with the clamp meter, so that the flexible coil and the outer surface of the cable are coaxially distributed, providing docking positioning for the subsequent leakage current detection of the cable by the flexible coil current clamp meter 6;

[0077] Through the drive of the reduction motor 3 and the pressing effect of the pressing mechanism 5 on the pressing wheel 4, the traveling wheel 2 can travel on the outer surface of the top of the cable. At this time, the cleaning rod 83 in the annular positioning mechanism 8 rotates reciprocally synchronously, which can not only perform rotational cleaning on the cable surface, cooperate with the flaw detection of the ultrasonic flaw detection probe 9 on the cable surface, improve the accuracy of the ultrasonic flaw detection probe 9 for flaw detection on the cable to a certain extent, but also form rotational positioning of the cleaning rod 83 on the cable surface, thereby effectively improving the stability of the traveling wheel 2 when traveling on the cable surface, providing a stable traveling route for the subsequent leakage detection of the cable by the flexible coil current clamp meter 6, and effectively avoiding the phenomenon of uneven electromagnetic distribution caused by the offset of the flexible coil, ensuring the accuracy of the flexible coil current clamp meter 6 when inspecting the cable for leakage.

[0078] According to the above working process, it can be seen that through the mutual cooperation of the pressing and positioning mechanism and the annular positioning mechanism 8, the traveling wheel 2 and the two pressing wheels 4 can perform triangular pressing and positioning on the cable, and at the same time, the annular positioning mechanism 8 performs annular positioning on the outer surface of the cable, thereby greatly improving the stability of the machine housing 1 when positioning on the cable surface. Through the setting of the docking mechanism 7, after the machine housing 1 is stably positioned around the cable, the flexible coil current clamp meter 6 can be rotationally docked, completing the convenient positioning treatment before the flexible coil current clamp meter 6 inspects the cable for leakage. The operation is simple, time-saving and labor-saving;

[0079] After the housing 1 is stably installed around the cable and the flexible coil current clamp 6 is rotationally docked, at this time, driven by the reduction motor 3, the pressing action of the traveling wheels 2 and the pressing wheels 4 on the surface of the cable can make the housing 1 drive the flexible coil current clamp 6 to move forward on the surface of the cable, so as to realize the mobile inspection process of cable leakage detection. At the same time, the annular positioning mechanism 8 moves synchronously with the drive of the reduction motor 3, which can not only perform rotational positioning on the cable, thereby improving the stability of the housing 1 and the flexible coil current clamp 6 moving forward on the cable, effectively improving the accuracy of the flexible coil current clamp 6 for cable leakage detection, but also perform cleaning treatment on the surface of the cable, and cooperate with the ultrasonic flaw detection probe 9 for flaw detection of the cable, so as to perform two fault inspection processes of cable leakage detection inspection and flaw detection inspection on the cable.

[0080] Embodiment 2:

[0081] Based on Embodiment 1, according to Figure 5 、 Figure 6 and Figure 7 shown, it is specifically noted that the pressing mechanism 5 further includes a guide sleeve 55, the guide sleeve 55 is fixed to the inner wall of the housing 1, and the top surface of the guide sleeve 55 is slidably penetrated by two symmetrically distributed L-shaped rods 56. A connecting rod 57 is hinged between the L-shaped rod 56 and the adjacent U-shaped frame 53, and the tops of the two L-shaped rods 56 are commonly fixed with a limiting ring 58;

[0082] A rotating disk 59, the rotating disk 59 is coaxially connected to the output end of the reduction motor 3, and a rotating column 510 is fixed to the outer surface of the rotating disk 59, and the limiting ring 58 is sleeved on the outer surface of the rotating column 510;

[0083] It should be noted that when the pressing plate 54 is extruded into the cable surface, at this time, the U-shaped frame 53 and the track frame 51 move downward at the housing 1. Since the reduction motor 3 is not driven at this time, the position of the L-shaped rod 56 is stationary at this time, but due to the change in the height of the track frame 51, at this time, through the connection of the connecting rod 57, the two U-shaped frames 53 move synchronously toward the center in the track frame 51, that is, the pressing wheels 4 move closer to each other while moving downward. At this time, when the cable is extruded into the middle of the two pressing wheels 4 and the traveling wheels 2, the convenience of its operation is improved to a certain extent;

[0084] When the housing 1 and the flexible coil current clamp 6 move forward on the cable surface driven by the reduction motor 3, the rotating disc 59 and the rotating column 510 rotate synchronously at this time. Since the limiting ring 58 is always sleeved on the outer surface of the rotating column 510, the L-shaped rod 56 guided and limited by the guide sleeve 55 can move up and down reciprocally with the rotation of the rotating disc 59. Through the connection of the connecting rod 57, the two traveling wheels 2 reciprocally rotate in the track frame 51 to move closer to each other at this time, so that the distance between the traveling wheels 2 and the two pressing wheels 4 is adjusted in the traveling direction, thereby forming different triangular pressing positions to ensure the stability of the housing 1 when advancing and inspecting on the cable surface.

[0085] The reduction motor 3, the flexible coil current clamp 6 and the drive motor 75 can all be purchased on the market, which are mature technologies in this field and have been fully disclosed, so they will not be repeated in the specification.

[0086] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power distribution line fault inspection device, comprising a machine housing (1), characterized in that, Further included are: Traveling wheels (2), the traveling wheels (2) are arranged on the inner wall of the top of the machine housing (1), a reduction motor (3) coaxially connected to the traveling wheels (2) is arranged on the inner wall of the top of the machine housing (1), two pressing wheels (4) symmetrically distributed are arranged below the traveling wheels (2), and a pressing mechanism (5) cooperating with the two pressing wheels (4) is arranged inside the machine housing (1); A flexible coil current clamp meter (6), the flexible coil current clamp meter (6) is arranged behind the traveling wheels (2) and fixed to the machine housing (1), a docking mechanism (7) for the flexible coil to surround the periphery of the cable is arranged inside the machine housing (1), and an annular positioning mechanism (8) is arranged between the flexible coil current clamp meter (6) and the traveling wheels (2).

2. The power distribution line fault inspection device according to claim 1, characterized in that, The pressing mechanism (5) includes: Track frames (51), two track frames (51) are arranged and installed in parallel inside the machine housing (1), a support member (52) is arranged below the two track frames (51), two symmetrically distributed U-shaped frames (53) are slidably connected inside the two track frames (51), and the two traveling wheels (2) are respectively rotatably installed inside the U-shaped frames (53); A pressing plate (54), the pressing plate (54) is fixed to the top surface of the track frame (51) arranged away from the inner wall of the machine housing (1).

3. The power distribution line fault inspection device according to claim 2, wherein The support member (52) includes: Vertical rods (521), four vertical rods (521) are arranged and all slidably penetrate the bottom surface of the machine housing (1), the top ends of the vertical rods (521) are fixed to the bottom surface of the track frame (51), and a counterweight plate (522) is jointly fixed to the bottom ends of the four vertical rods (521); Lifting springs (523), four lifting springs (523) are arranged and respectively sleeved on the peripheries of the four vertical rods (521), and the two ends of the lifting springs (523) are respectively fixed to the opposite surfaces of the track frame (51) and the machine housing (1).

4. The power distribution line fault inspection device according to claim 1, characterized in that The docking mechanism (7) includes: A limiting ring (71), the limiting ring (71) is fixed to the inner wall of the bottom of the machine housing (1), an incomplete gear ring (72) is rotatably sleeved on the outer surface of the limiting ring (71), a plurality of positioning rings (73) evenly distributed at equal angles are fixed to the outer surface of the incomplete gear ring (72), and the flexible coil of the flexible coil current clamp meter (6) is fixed inside the plurality of positioning rings (73); A driving gear (74), the driving gear (74) is arranged above the incomplete gear ring (72) and is in meshing connection with the incomplete gear ring (72), and a driving motor (75) coaxially connected to the driving gear (74) is arranged inside the machine housing (1).

5. The power distribution line fault inspection device according to claim 4, characterized in that The annular positioning mechanism (8) includes: Fixed frames (81), two fixed frames (81) are arranged and symmetrically fixed to the inner wall of the machine housing (1), the driving motor (75) is installed on the outer surface of the upper fixed frame (81), an annular gear ring (82) is rotatably connected to the inner wall of each fixed frame (81), and two cleaning rods (83) are rotatably connected to the inner surface of each annular gear ring (82); The rotating gears (84) are provided with two and are respectively rotatably mounted on the inner walls of the two fixed frames (81). The rotating gears (84) are meshed and connected with the adjacent annular tooth rings (82). A transmission member (85) for synchronously rotating the two rotating gears (84) is arranged inside the machine housing (1).

6. The power distribution line fault inspection device according to claim 5, characterized in that, The transmission member (85) includes: An incomplete gear (851) which is rotatably mounted on the inner wall of the machine housing (1). A U-shaped tooth frame (852) is meshed and connected to the periphery of the incomplete gear (851). L-shaped rack bars (853) are fixed on both sides of the U-shaped tooth frame (852). The L-shaped rack bars (853) slidably penetrate through the outer surface of the machine housing (1) and are meshed and connected with the adjacent rotating gears (84). A worm gear (854) which is coaxially fixed with the incomplete gear (851). The output end of the reduction motor (3) is coaxially connected with a worm (855), and the worm (855) is meshed and connected with the worm gear (854).

7. The power distribution line fault inspection device according to claim 5, characterized in that, An ultrasonic flaw detector probe (9) is arranged in the middle of the inner surface of the annular tooth ring (82), and the ultrasonic flaw detector probe (9) is attached to the outer surface of the cable.

8. The power distribution line fault inspection device according to claim 2, characterized in that, The pressing mechanism (5) further includes: A guide sleeve (55) which is fixed on the inner wall of the machine housing (1). Two symmetrically distributed L-shaped rods (56) slidably penetrate through the top surface of the guide sleeve (55). A connecting rod (57) is hinged between the L-shaped rod (56) and the adjacent U-shaped frame (53). A limiting ring (58) is jointly fixed at the tops of the two L-shaped rods (56). A rotating disk (59) which is coaxially connected with the output end of the reduction motor (3). A rotating column (510) is fixed on the outer surface of the rotating disk (59), and the limiting ring (58) is sleeved on the outer surface of the rotating column (510).

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