Auxiliary moving device used in local insulation defect detection and positioning process of distribution cable

Abstract

The invention discloses an auxiliary moving device used in a local insulation defect detection and positioning process of a distribution cable, belongs to the technical field of moving devices, and aims to solve the problems that the technology cannot be applied to insulation defect detection and positioning of a high-altitude cable due to the lack of a moving device for a live detection component in the prior art. The high-altitude cable detection device comprises a shell unit, a storage battery, a PLC, a detection part clamping assembly and two moving assemblies, and further comprises two clamping units, a wind power damping unit, a deicing assembly and a camera, and the deicing assembly further comprises a fixing unit, a deicing unit and a heating unit. The auxiliary moving device is mainly used in the local insulation defect detection and positioning process of the distribution cable.

Description

Technical Field

[0001] The present invention belongs to the technical field of mobile devices, and in particular relates to an auxiliary mobile device used in the process of detecting and locating local insulation defects of distribution cables. Background Art

[0002] There are a large number of power distribution cables in Northeast China, and the operating environment is harsh. In a high-cold environment, it is easy to form local insulation defects under the influence of external force damage, local heat sources, moisture and water ingress, which will cause sudden power outages after long-term development. At present, the methods for detecting and locating local defects in power cables by scholars at home and abroad can be mainly divided into three categories: time domain reflectometry (TDR), time-frequency domain reflectometry (TFDR) and frequency domain reflectometry (FDR). Among them, TDR injects a pulse signal into the cable and identifies and locates the defect point by observing the time domain reflection waveform. However, the TDR method has few high-frequency components, and the sensitivity for detecting weak defects in the cable is insufficient. It is not suitable for the detection of latent defects, and there are shortcomings such as positioning blind spots and low positioning accuracy. TFDR injects Gaussian chirp pulse signals into the cable to solve the problem of few high-frequency components of TDR pulse signals. However, the TFDR method has high requirements for pulse modulation equipment, and the high-frequency modulated pulse wave decays quickly, which makes it difficult to detect defects in long cables. FDR is developing rapidly because it has higher sensitivity than TDR in detecting minor defects in cables (for example, defects such as dampness of intermediate joints, local aging, insulation damage, etc.). In recent years, it has made great progress in the field of cable defect positioning, but it can still only be implemented under power outage conditions. Insulation defect detection under power outage conditions will affect the power supply work in the area, especially in cold areas where power outages and power restorations will cause instantaneous working pressure in some circuits, which is prone to power accidents. In response to this defect, some fields have specially planned to install annular coupling capacitors on distribution cables to detect and locate live frequency domain reflections of local insulation defects in distribution cables under live operation without power outages. However, due to the lack of mobile devices for live detection components, this technology cannot be applied to insulation defect detection and positioning of high-altitude cables, which brings a lot of inconvenience to the detection of high-altitude cables. Therefore, it is in line with practical needs to develop an auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables. Summary of the invention

[0003] The present invention aims to solve the problem that the mobile device of the prior art lacks a live detection component, which makes the technology unable to be applied to the insulation defect detection and positioning of the aerial cable, and brings a lot of inconvenience to the detection of the aerial cable; and further provides an auxiliary mobile device used in the local insulation defect detection and positioning process of the distribution cable;

[0004] An auxiliary mobile device used in the process of detecting and locating local insulation defects of a distribution cable, the auxiliary mobile device comprising a housing unit, a battery, a PLC controller, a detection component clamping assembly and two mobile assemblies, the battery and the PLC controller are both installed in the housing unit, and the power input end of the PLC controller is connected to the power output end of the battery through a wire, the two mobile assemblies are both installed on the outer top of the housing unit, and the housing unit is hung on the cable through the two mobile assemblies, the two mobile assemblies drive the housing unit to reciprocate along the length direction of the cable, the power input end of each mobile assembly is connected to the power output end of the battery through a wire, the signal input end of each mobile assembly is connected to the signal output end of the PLC controller through a wire, the detection component clamping assembly is installed on the outer top of the housing unit, and the detection component clamping assembly is arranged between the two mobile assemblies, the detection component clamping assembly is clamped on the detection component located on the cable and drives the detection component and the housing unit to move synchronously;

[0005] Further, the housing unit comprises an upper housing, a lower housing and a bearing plate, the top of the lower housing is an open end, the bottom is a closed end, the bearing plate is arranged at the opening of the lower housing and is detachably connected to the lower housing, the top of the upper housing is a closed end, the bottom is an open end, the upper housing is buckled on the lower housing and is detachably connected to the bearing plate, the connection between the upper housing and the lower housing is sealed by a sealing strip, the battery is located in a cavity formed by the lower housing and the bearing plate, and the battery is detachably connected to the inner bottom of the lower housing through a battery mounting seat, the PLC controller is located in a cavity formed by the upper housing and the bearing plate, and the PLC controller is detachably connected to the top of the bearing plate through a controller mounting seat, and the detection component clamping assembly and the two moving assemblies are all installed on the outer top of the upper housing;

[0006] Furthermore, the detection component clamping assembly includes a first splicing unit and a second splicing unit, and the first splicing unit and the second splicing unit are spliced ​​and fixed to form the detection component clamping assembly;

[0007] The No. 1 spliced ​​unit comprises a No. 1 spliced ​​half shell and a No. 1 mounting foot, one end of the No. 1 mounting foot is fixedly connected to the outer wall of the No. 1 spliced ​​half shell, and a No. 1 wiring hole is processed at the end of the No. 1 spliced ​​half shell;

[0008] The second splicing unit comprises a second splicing half shell and a second mounting foot, one end of the second mounting foot is fixedly connected to the outer wall of the second splicing half shell, and a second wiring hole is processed at the end of the second splicing half shell;

[0009] The first and second assembled half shells are assembled and fixed to form a clamping part of the detection component, and the clamping part of the detection component is mounted on the outer top of the upper shell through the first and second mounting feet;

[0010] Furthermore, the moving component includes a connecting frame, a buckle shell, a motor, a driving bevel gear, a driven bevel gear, a spline shaft, a driving wheel, two side clamping wheels and two return springs, the connecting frame is installed on the outer top of the upper shell, the buckle shell is buckled on one side of the connecting frame, and the buckle shell is fixedly connected to the connecting frame, the motor is arranged in a cavity formed by the buckle shell and the connecting frame, and the shell of the motor is detachably connected to the inner bottom of the buckle shell through a motor connecting seat, the driving bevel gear is sleeved on the power output shaft of the motor, the power input end of the motor is connected to the power output end of the battery through a wire, the signal input end of the motor is connected to the signal output end of the PLC controller through a wire, the spline shaft is inserted in the connecting frame, and the spline shaft is rotatably connected to the connecting frame through a bearing, one end of the spline shaft passes through the connecting frame and is inserted in the driven bevel gear located in the buckle shell, and The driven bevel gear is transmission-connected with the active bevel gear, the driving wheel and the two side clamping wheels are all located in the connecting frame, the driving wheel is sleeved on the middle part of the spline shaft, and the driving wheel is fixedly connected to the spline shaft, the two side clamping wheels are sleeved on the spline shaft, and the two side clamping wheels are relatively arranged at two ends of the driving wheel, each side clamping wheel is slidingly connected to the spline shaft, a return spring is provided between each side clamping wheel and the connecting frame, the return spring is sleeved on the spline shaft, one end of the return spring is rotationally connected to one end of a side clamping wheel away from the driving wheel, and the other end of the return spring is fixedly connected to the inner wall of the adjacent connecting frame, the driving wheel is located at the top of the cable and can roll back and forth along the extension direction of the cable under the drive of the motor, the two side clamping wheels are located on both sides of the cable and limit the cable under the elastic force of the return spring;

[0011] Furthermore, the auxiliary moving device also includes two clamping units, each clamping unit is arranged corresponding to a moving assembly, the two clamping units are arranged in a cavity formed by the upper shell and the carrying plate, and the bottom end of each clamping unit is detachably connected to the carrying plate, and the top end of each clamping unit extends to the outer top of the upper shell and cooperates with the driving wheel arranged corresponding thereto to clamp the cable longitudinally;

[0012] The clamping unit includes an electric cylinder fixing seat, an electric cylinder, a wheel frame and a bottom clamping wheel. The electric cylinder fixing seat is arranged on the top of the bearing plate and is detachably connected to the bearing plate through bolts. The electric cylinder is inserted into the electric cylinder fixing seat in the vertical direction, and the housing of the electric cylinder is detachably connected to the electric cylinder fixing seat. The wheel frame is arranged at the end of the piston rod in the electric cylinder, and the wheel frame is detachably connected to the electric cylinder. The bottom clamping wheel is arranged in the wheel frame, and the bottom clamping wheel is rotatably connected to the wheel frame. The bottom clamping wheel cooperates with the driving wheel corresponding to it to clamp the cable longitudinally. The power input end of the electric cylinder is connected to the power output end of the battery through a wire, and the signal input end of the electric cylinder is connected to the signal output end of the PLC controller through a wire.

[0013] Furthermore, the auxiliary movement device also includes a wind damping unit, which is arranged in a cavity formed by the upper shell and the bearing plate, and the damping unit is detachably connected to the inner top of the upper shell;

[0014] The wind damping unit includes a top mounting plate, a fixing ring, a weight ball and four slings. The top mounting plate is located at the inner top of the upper shell, and the top mounting plate is detachably connected to the upper shell. The fixing ring is hoisted directly below the top mounting plate by four slings, and the weight ball is installed in the fixing ring.

[0015] Furthermore, the auxiliary mobile device further comprises a deicing assembly, which is located at one end of the upper shell body close to the forward direction of the auxiliary mobile device, and the deicing assembly comprises a fixing unit and a deicing unit, the fixing unit is mounted on the outer top of the upper shell body, the deicing unit is mounted on the fixing unit, and the deicing unit is sleeved on the cable;

[0016] The fixing unit includes two spliced ​​fixing parts, each of which includes a No. 1 spliced ​​step half shell and a spliced ​​fixing foot, one end of the spliced ​​fixing foot is fixedly connected to the outer wall of the large-diameter half shell in the No. 1 spliced ​​step half shell, and the other end of the spliced ​​fixing foot is installed on the outer top of the upper shell. The two No. 1 spliced ​​step half shells are spliced ​​to form a No. 1 step sleeve, and the deicing unit is inserted into the small-diameter sleeve in the No. 1 step sleeve and is detachably connected to the No. 1 step sleeve;

[0017] The deicing unit includes two No. 2 spliced ​​step half shells and four ice-breaking blades. The two No. 2 spliced ​​step half shells are spliced ​​to form a No. 2 step sleeve. The No. 2 step sleeve is arranged on the cable, and the small-diameter sleeve in the No. 2 step sleeve is inserted into the small-diameter sleeve in the No. 1 step sleeve and is detachably connected to the small-diameter sleeve in the No. 1 step sleeve. The four ice-breaking blades are fixed at equal intervals along the circumference at the end of the large-diameter sleeve in the No. 2 step sleeve, and two ice-breaking blades are fixed on each No. 2 spliced ​​step half shell. The deicing assembly moves synchronously with the auxiliary moving device and breaks and removes the ice layer covering the cable surface in the forward direction through the ice-breaking blades.

[0018] Furthermore, a brush is installed circumferentially on the inner wall of the small-caliber sleeve in the No. 1 stepped sleeve;

[0019] Furthermore, the deicing assembly also includes a heating unit, which is sleeved on the small-caliber sleeve in the No. 1 stepped sleeve and is detachably connected to the No. 1 stepped sleeve;

[0020] The heating unit includes two heating half shells and four heating arms. The two heating half shells are assembled to form a heating sleeve. The heating sleeve is mounted on the small-diameter sleeve in the No. 1 stepped sleeve and is detachably connected to the No. 1 stepped sleeve. The four heating arms are equidistantly arranged at the end of the heating sleeve facing one end of the deicing unit along the circumferential direction. Two heating arms are arranged on each heating half shell. One end of each heating arm is fixedly connected to the heating sleeve, and the other end of each heating arm is arranged corresponding to the outer wall of the cable.

[0021] Furthermore, a camera is installed at the top of the front end of the upper shell, the shooting end of the camera is arranged toward the cable in front of the deicing assembly, and the power input end of the camera is connected to the power output end of the battery through a wire;

[0022] The beneficial effects of this application compared to the prior art are as follows:

[0023] The present application provides an auxiliary moving device used in the detection and positioning of local insulation defects in distribution cables. The live insulation defect detection component of the distribution cable is clamped and fixed by a detection component clamping assembly to ensure a stable positional relationship between it and the cable under test. The housing unit and the detection component clamping assembly are driven by the moving assembly to reciprocate along the extension direction of the cable under test. During the movement, the insulation defect detection component can perform insulation detection on the working cable. The research and development of the present application effectively solves the problem that the detection device is difficult to move in the field of live insulation defect detection of high-altitude distribution cables, and provides good assistance for the application in the field of live insulation defect detection of distribution cables.

[0024] The present application provides an auxiliary moving device used in the detection and positioning of local insulation defects in distribution cables. In order to ensure the stability and reliability of the movement of the moving component on the cable, side clamping wheels are added to the moving component. The elastic force provided by the reset spring allows the side clamping wheels to limit the cable under test on both sides, thereby ensuring the accuracy of the posture between the driving wheel and the cable. In order to improve the contact tightness between the driving wheel and the cable, the present application also provides a longitudinal clamping unit for each moving component. The longitudinal clamping unit drives the bottom clamping wheel to cooperate with the driving wheel to limit the cable longitudinally through the electric cylinder, which can effectively prevent the cable surface from slipping excessively in winter. The driving wheel is prone to derailment when moving on the cable only by gravity, which greatly improves the safety and stability of the auxiliary moving device during operation.

[0025] The present application provides an auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables. Considering that the application environment is relatively cold, there will be snow or ice on the surface of the back cable, which may easily affect the accuracy of insulation detection and positioning. Therefore, the present application sets an ice removal component at the front end of the auxiliary mobile device. The ice removal component includes two parts. One part is mechanical ice removal through an ice-breaking blade. The ice-breaking blade impacts the ice layer in the forward direction under the movement of the auxiliary mobile device, and breaks the ice layer through the cutting edge of the ice-breaking blade to clear the movement path of the auxiliary mobile device. Considering that the auxiliary mobile device is mainly used for live cables The cable is used to detect and locate insulation defects. In actual work, the movement speed is limited. For thicker ice layers, it is impossible to directly break the ice by relying solely on the impact force of movement. At this time, the second part of the de-icing assembly can play a role. The second part of the de-icing assembly is composed of multiple electric heating tubes. The ends of the electric heating tubes are arranged close to the cable surface. When the ice layer passes, the ice layer can be heated and melted by the electric heating tubes. After the strength and hardness of the ice layer are reduced, the ice-breaking blade is used again to impact the ice layer to achieve the purpose of de-icing, which can effectively improve the de-icing effect and reduce the shaking of the mobile device during de-icing, thereby improving the operating stability of the mobile device.

[0026] The present application provides an auxiliary mobile device used in the detection and positioning of local insulation defects of distribution cables. Considering that the auxiliary mobile device operates at high altitude and is greatly affected by airflow and wind during movement, in order to ensure the movement stability of the auxiliary mobile device, a wind damping unit is also added to the auxiliary mobile device. The heavy ball in the wind damping unit generates resistance in the opposite direction of the wind during shaking, so as to reduce the shaking amplitude of the auxiliary mobile device and maintain its movement stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view schematic diagram of the auxiliary mobility device described in this application;

[0028] Figure 2 This is a main cross-sectional schematic diagram of the auxiliary mobility device described in this application;

[0029] Figure 3 A schematic top view of the auxiliary mobility device described in this application;

[0030] Figure 4 It is a split schematic diagram of the clamping assembly of the detection component in the auxiliary movement device described in the present application;

[0031] Figure 5 It is a schematic diagram of the assembly of the clamping assembly of the detection component in the auxiliary moving device described in the present application;

[0032] Figure 6 It is a schematic diagram of the spliced ​​side of the first spliced ​​half shell in the auxiliary mobility device described in the present application;

[0033] Figure 7 It is a schematic diagram of the spliced ​​side of the second spliced ​​half shell in the auxiliary movement device described in the present application;

[0034] Figure 8 This is a schematic diagram of the structure of the mobile component in the auxiliary mobile device described in this application;

[0035] Fig. 9 This is a schematic diagram of the installation of the driving wheel and the side clamping wheel in the auxiliary mobile device described in this application;

[0036] Fig.10 This is a schematic diagram of the structure of the clamping unit in the auxiliary movement device described in this application;

[0037] Fig.11 This is a schematic structural diagram of a wind damping unit in the auxiliary mobility device described in this application;

[0038] Fig.12 This is a schematic diagram of the structure of the de-icing assembly in the auxiliary mobile device described in this application;

[0039] Fig.13 This is a schematic diagram of the structure of the fixed unit in the auxiliary mobile device described in this application;

[0040] Fig.14 It is a main cross-sectional schematic diagram of a fixed unit in the auxiliary mobile device described in the present application;

[0041] Fig.15 A schematic side view of a fixing unit in the auxiliary mobility device described in the present application;

[0042] Fig.16 It is a schematic diagram of the main view of the deicing unit in the auxiliary mobile device described in the present application;

[0043] Fig.17 A schematic side view of a deicing unit in the auxiliary mobile device described in the present application;

[0044] Fig.18 It is a front view schematic diagram of a heating unit in the auxiliary mobile device described in the present application;

[0045] Fig.19 A schematic side view of a heating unit in the auxiliary mobile device described in the present application;

[0046] Fig. 20 This is a schematic diagram of the heating unit in the auxiliary mobile device described in the present application along the AA direction;

[0047] Fig.21 for Figure 2 A partial enlarged view of point B in the middle;

[0048] In the figure, 1 is an upper shell, 2 is a lower shell, 3 is a bearing plate, 4 is a battery, 5 is a PLC controller, 6 is a frequency domain reflector, 7 is a detection component clamping assembly, 71 is a No. 1 split half shell, 72 is a No. 1 mounting foot, 73 is a No. 1 mounting groove, 74 is a No. 1 wiring hole, 75 is a No. 2 split half shell, 76 is a No. 2 mounting foot, 77 is a No. 2 mounting groove, 78 is a No. 2 wiring hole, 8 is a moving assembly, 81 is a connecting frame, 82 is a buckle shell, 83 is a motor, 84 is an active bevel gear, 85 is a driven bevel gear, 86 is a spline shaft, 87 is a driving wheel, 88 is a side clamping wheel, 89 is a reset spring, 9 is a clamping unit, 91 is an electric cylinder fixing seat, 92 is an electric cylinder, 93 is a wheel frame, 94 is a bottom clamping wheel, 10 is a wind damping unit Element, 101 top mounting plate, 102 fixing ring, 103 weight ball, 104 sling, 11 de-icing assembly, 111 fixing unit, 1111 No. 1 spliced ​​step half shell, 1112 spliced ​​fixing leg, 1113 No. 1 de-icing assembly fixing pin hole, 1114 No. 1 heating unit fixing pin hole, 1115 brush, 112 de-icing unit, 1121 No. 2 spliced ​​step half shell, 1122 No. 2 de-icing assembly fixing pin hole, 1123 ice-breaking blade, 113 heating unit, 1131 heating half shell, 1132 heating arm, 1133 No. 2 heating unit fixing pin hole, 12 camera, 1001 mounting sleeve, 2001 lap plate and 3001 mounting pin. DETAILED DESCRIPTION

[0049] Specific implementation method 1: Combination Figures 1 to 21 The present embodiment is described. In the present embodiment, an auxiliary moving device used in the detection and positioning process of local insulation defects of distribution cables is provided. The auxiliary moving device includes a shell unit, a battery 4, a PLC controller 5, a detection component clamping assembly 7 and two moving assemblies 8. The battery 4 and the PLC controller 5 are both installed in the shell unit, and the power input end of the PLC controller 5 is connected to the power output end of the battery 4 through a wire. The two moving assemblies 8 are both installed on the outer top of the shell unit, and the shell unit is hung on the cable 13 through the two moving assemblies 8. The two moving assemblies 8 drive the shell unit to reciprocate along the length direction of the cable 13. The power input end of each moving assembly 8 is connected to the power output end of the battery 4 through a wire, and the signal input end of each moving assembly 8 is connected to the signal output end of the PLC controller 5 through a wire. The detection component clamping assembly 7 is installed on the outer top of the shell unit, and the detection component clamping assembly 7 is arranged between the two moving assemblies 8. The detection component clamping assembly 7 is clamped on the detection component located on the cable 13 and drives the detection component and the shell unit to move synchronously.

[0050] In this embodiment, the battery 4 is used to power the PLC controller 5 and the two moving components 8. The PLC controller 5 adopts the S7-1200 PLC control module produced by Siemens, which can complete simple logic control, advanced logic control and network communication functions. At the same time, the controller 5 can be inserted with a storage card for program storage, which can meet the control requirements of this application. The detection component clamping component 7 and the moving component 8 are both supported by the shell unit, which ensures the stability of the detection component clamping component 7 and the moving component 8 during operation. The detection component clamping component 7 is used to clamp the detection component and fix the detection component to ensure the accuracy of its working posture with the cable. The moving component 8 is used to drive the shell unit to reciprocate along the cable, thereby realizing the continuity of the live insulation detection of the distribution cable.

[0051] Specific implementation method 2: Combination Figures 1 to 21 This embodiment is described. The difference between this embodiment and the first embodiment is that the housing unit includes an upper housing 1, a lower housing 2 and a bearing plate 3. The top of the lower housing 2 is an open end and the bottom is a closed end. The bearing plate 3 is arranged at the opening of the lower housing 2 and is detachably connected to the lower housing 2. The top of the upper housing 1 is a closed end and the bottom is an open end. The upper housing 1 is buckled on the lower housing 2 and is detachably connected to the bearing plate 3. The connection between the upper housing 1 and the lower housing 2 is sealed by a sealing strip. The battery 4 is located in the cavity formed by the lower housing 2 and the bearing plate 3, and the battery 4 is detachably connected to the inner bottom of the lower housing 2 through a battery mounting seat. The PLC controller 5 is located in the cavity formed by the upper housing 1 and the bearing plate 3, and the PLC controller 5 is detachably connected to the top of the bearing plate 3 through a controller mounting seat. The detection component clamping assembly 7 and the two moving assemblies 8 are all installed on the outer top of the upper housing 1. Other components and connection methods are the same as those of the first embodiment.

[0052] In this embodiment, a lap plate 2001 is provided at the opening of the lower shell 2, and the load-bearing plate 3 is supported by the lap plate 2001, and the lap plate 2001 is fixed to the load-bearing plate 3 by bolts. A plurality of mounting pins 3001 are equidistantly provided at the top edge of the load-bearing plate 3 along the circumferential direction, and a plurality of mounting sleeves 1001 are equidistantly provided along the contour of the opening end of the upper shell 1, and each mounting sleeve 1001 is coaxially arranged corresponding to a mounting pin 3001. The upper shell 1 is mounted on a plurality of mounting pins 3001 through a plurality of mounting sleeves 1001 to achieve a detachable connection with the load-bearing plate 3. It is worth noting that a tight friction connection is adopted between the mounting sleeve 1001 and the mounting pin 3001 to ensure the stability of the connection. A sealing strip is provided at the connection between the upper shell 1 and the lower shell 2 to effectively prevent wind and snow from entering, thereby effectively protecting the internal devices.

[0053] Specific implementation method three: Combination Figures 1 to 21This embodiment is described. The difference between this embodiment and the second embodiment is that the detection component clamping assembly 7 includes a first splicing unit and a second splicing unit. The first splicing unit and the second splicing unit are spliced ​​and fixed to form the detection component clamping assembly 7.

[0054] The first assembly unit includes a first assembly half shell 71 and a first mounting foot 72. One end of the first mounting foot 72 is fixedly connected to the outer wall of the first assembly half shell 71. The end of the first assembly half shell 71 is processed with a first wiring hole 74.

[0055] The second assembly unit includes a second assembly half shell 75 and a second mounting foot 76. One end of the second mounting foot 76 is fixedly connected to the outer wall of the second assembly half shell 75. The end of the second assembly half shell 75 is processed with a second wiring hole 78.

[0056] The first half shell 71 and the second half shell 75 are assembled and fixed to form the clamping part of the detection component, and the clamping part of the detection component is installed on the outer top of the upper shell 1 through the first mounting foot 72 and the second mounting foot 76. Other components and connection methods are the same as those of the second embodiment.

[0057] In the present embodiment, the No. 1 splicing unit and the No. 2 splicing unit adopt a pin-hole splicing connection method, wherein a pin is fixed on the splicing side of the No. 1 splicing half shell 71, and a pin hole is processed on the splicing side of the No. 2 splicing half shell 75, and the accuracy of the splicing is ensured by the pin and the pin hole. The No. 1 splicing unit and the No. 2 splicing unit are both provided with mounting grooves for detecting components, which are used to place the detecting components and ensure the stability of the mounting of the detecting components. At the same time, the No. 1 wiring hole 74 and the No. 2 wiring hole 78 are connected with the corresponding mounting grooves to guide the detection components to external wiring. After the No. 1 splicing unit and the No. 2 splicing unit are spliced, a ring structure is formed for being mounted on the cable. At the same time, the No. 1 mounting foot 72 and the No. 2 mounting foot 76 support the ring structure to ensure the working stability of the detecting component clamping assembly 7.

[0058] Specific implementation method four: Combination Figures 1 to 21The present embodiment is described. The present embodiment is different from the third embodiment in that the moving assembly 8 includes a connecting frame 81, a buckle shell 82, a motor 83, an active bevel gear 84, a driven bevel gear 85, a spline shaft 86, a driving wheel 87, two side clamping wheels 88 and two return springs 89. The connecting frame 81 is mounted on the outer top of the upper shell 1, the buckle shell 82 is buckled on one side of the connecting frame 81, and the buckle shell 82 is fixedly connected to the connecting frame 81. The motor 83 is arranged in a cavity formed by the buckle shell 82 and the connecting frame 81. The housing of the motor 83 is detachably connected to the inner bottom of the buckle shell 82 through the motor connecting seat, the driving bevel gear 84 is sleeved on the power output shaft of the motor 83, the power input end of the motor 83 is connected to the power output end of the battery 4 through a wire, the signal input end of the motor 83 is connected to the signal output end of the PLC controller 5 through a wire, the spline shaft 86 is inserted in the connecting frame 81, and the spline shaft 86 is rotatably connected to the connecting frame 81 through a bearing, one end of the spline shaft 86 passes through the connecting frame 81 and is inserted in the buckle shell 82. The driven bevel gear 85 is in the driven bevel gear 85, and the driven bevel gear 85 is in transmission connection with the driving bevel gear 84. The driving wheel 87 and the two side clamping wheels 88 are both located in the connecting frame 81. The driving wheel 87 is sleeved on the middle part of the spline shaft 86, and the driving wheel 87 is fixedly connected to the spline shaft 86. The two side clamping wheels 88 are sleeved on the spline shaft 86, and the two side clamping wheels 88 are relatively arranged at both ends of the driving wheel 87. Each side clamping wheel 88 is slidably connected to the spline shaft 86, and each side clamping wheel 88 is connected to the connecting frame 81. A return spring 89 is provided in the middle, and the return spring 89 is sleeved on the spline shaft 86. One end of the return spring 89 is rotatably connected to one end of a side clamping wheel 88 away from the driving wheel 87, and the other end of the return spring 89 is fixedly connected to the inner wall of the adjacent connecting frame 81. The driving wheel 87 is located at the top of the cable 13 and can reciprocate along the extension direction of the cable 13 under the drive of the motor 3. The two side clamping wheels 88 are located on both sides of the cable 13 and limit the cable 13 under the elastic force of the return spring 89. Other components and connection methods are the same as those of the specific embodiment three.

[0059] In this embodiment, the connecting frame 81 is installed on the top of the upper shell 1 by bolts, the buckle shell 82 and the connecting frame 81 are fixed by welding, and a detachable mounting plate is provided on both sides of the buckle shell 82. When the motor 3, the active bevel gear 84 and the driven bevel gear 85 are arranged, the mounting plate on the side of the buckle shell 82 is removed from the buckle shell 82 body to provide an installation space for the motor. The spline shaft 86 plays a transmission and guiding role. The spline shaft 86 drives the driving wheel 87 fixed above it to rotate synchronously. The two side clamping wheels 88 are respectively located on the driving wheel The two sides of 87 play the role of clamping and limiting the cable 13. The side clamping wheel 88 is slidably connected to the spline shaft 86 and is in close contact with the cable 13 under the action of the reset spring 89. A friction layer is attached to the contact surface between the side clamping wheel 88 and the cable 13 to increase the friction between it and the cable 13. At the same time, the reset spring 89 has a certain stiffness, which can offset the centrifugal force generated by the side clamping wheel 88 when it rotates. Under the action of the side clamping wheel 88, it can help improve the position accuracy between the driving wheel 87 and the cable 13.

[0060] Specific implementation method five: Combination Figures 1 to 21 This embodiment is described. The difference between this embodiment and the fourth embodiment is that the auxiliary moving device further includes two clamping units 9, each clamping unit 9 is arranged corresponding to a moving assembly 8, and the two clamping units 9 are arranged in the cavity formed by the upper shell 1 and the carrying plate 3, and the bottom end of each clamping unit 9 is detachably connected to the carrying plate 3, and the top end of each clamping unit 9 extends to the outer top of the upper shell 1 and cooperates with the driving wheel 87 arranged corresponding to it to clamp the cable 13 longitudinally;

[0061] The clamping unit 9 includes an electric cylinder fixing seat 91, an electric cylinder 92, a wheel frame 93 and a bottom clamping wheel 94. The electric cylinder fixing seat 91 is arranged on the top of the bearing plate 3 and is detachably connected to the bearing plate 3 by bolts. The electric cylinder 92 is inserted into the electric cylinder fixing seat 91 in the vertical direction, and the housing of the electric cylinder 92 is detachably connected to the electric cylinder fixing seat 91. The wheel frame 93 is arranged at the end of the piston rod in the electric cylinder 92, and the wheel frame 93 is detachably connected to the electric cylinder 92. The bottom clamping wheel 94 is arranged in the wheel frame 93, and the bottom clamping wheel 94 is rotatably connected to the wheel frame 93. The bottom clamping wheel 94 cooperates with the driving wheel 87 corresponding to it to clamp the cable 13 longitudinally. The power input end of the electric cylinder 92 is connected to the power output end of the battery 4 through a wire, and the signal input end of the electric cylinder 92 is connected to the signal output end of the PLC controller 5 through a wire. Other components and connection methods are the same as those of the specific embodiment 4.

[0062] In the present embodiment, each clamping unit 9 is arranged corresponding to a moving component 8. The clamping unit 9 drives the bottom clamping wheel 94 to move upward through the electric cylinder 92 to cooperate with the driving wheel 87 to clamp the cable longitudinally, which is beneficial to improve the contact tightness between the cable 13 and the driving wheel 87, and can effectively avoid the excessive slip of the surface of the cable 13 in winter. The driving wheel 87 only relies on gravity to move on the cable 13 and is prone to derailment, which greatly improves the safety and stability of the auxiliary mobile device during operation. When the clamping unit 9 is arranged, the top of the cylinder body of the electric cylinder 92 extends to the outer top of the upper shell 1, and the gap between the cylinder body of the electric cylinder 92 and the upper shell 1 is sealed by a sealing strip. Such a setting takes into account that the cylinder body of the electric cylinder 92 will not perform telescopic movements during operation, and has a certain stability, which can effectively reduce the wear of the sealing strip on the sealing part when the clamping unit 9 is working in the later stage.

[0063] Specific implementation method six: Combination Figures 1 to 21 This embodiment is described. This embodiment is different from the fifth embodiment in that the auxiliary movement device further includes a wind damping unit 10. The damping unit 10 is disposed in a cavity formed by the upper shell 1 and the bearing plate 3, and the damping unit 10 is detachably connected to the inner top of the upper shell 1.

[0064] The wind damping unit 10 includes a top mounting plate 101, a fixing ring 102, a weight ball 103 and four slings 104. The top mounting plate 101 is located at the inner top of the upper shell 1, and the top mounting plate 101 is detachably connected to the upper shell 1. The fixing ring 102 is hoisted directly below the top mounting plate 101 by four slings 104, and the weight ball 103 is installed in the fixing ring 102. Other components and connection methods are the same as those of the fifth embodiment.

[0065] In this embodiment, considering that the auxiliary mobile device is operated at high altitude and is greatly affected by airflow and wind during movement, in order to ensure the movement stability of the auxiliary mobile device, a wind damping unit is further added to the auxiliary mobile device. The weight ball 103 in the wind damping unit generates resistance in the opposite direction of the wind during the shaking of the shell unit to reduce the shaking amplitude of the auxiliary mobile device, thereby maintaining its movement stability. Considering that the sling 104 may be affected by the temperature in a low temperature environment, resulting in reduced flexibility, the sling 104 can be optimized into a hollow structure with a built-in electric heating wire. The power input end of the electric heating wire is connected to the battery 4 through a wire, and the electric heating wire is connected to the battery 4 is connected in series with an electronic switch, which can be integrated into the PLC controller 5 and its working state is controlled by the PLC controller 5. When the staff finds that the auxiliary mobile unit shakes greatly during operation, they can increase the temperature of the sling 104 by energizing the electric heating wire, and try to increase the shaking amplitude of the heavy ball 103. If it still does not work, they can try other ways to stabilize the device, or give up the detection work. The design of changing the working temperature of the sling 104 can overcome the influence of the low temperature environment on the sensitivity of the wind damping unit, and provide an active option for reducing the shaking amplitude of the mobile device, which can improve the operating stability of the mobile device to a certain extent.

[0066] Specific implementation method seven: Combination Figures 1 to 21 The present embodiment is described. The present embodiment is different from the sixth embodiment in that the auxiliary mobile device further comprises a deicing assembly 11. The deicing assembly 11 is located at one end of the upper housing 1 close to the forward direction of the auxiliary mobile device. The deicing assembly 11 comprises a fixing unit 111 and a deicing unit 112. The fixing unit 111 is mounted on the outer top of the upper housing 1. The deicing unit 112 is mounted on the fixing unit 111. The deicing unit 112 is sleeved on the cable 13.

[0067] The fixing unit 111 includes two spliced ​​fixing parts, each of which includes a No. 1 spliced ​​step half shell 1111 and a spliced ​​fixing leg 1112, one end of the spliced ​​fixing leg 1112 is fixedly connected to the outer wall of the large-diameter half shell in the No. 1 spliced ​​step half shell 1111, and the other end of the spliced ​​fixing leg 1112 is installed on the outer top of the upper shell 1. The two No. 1 spliced ​​step half shells 1111 are spliced ​​to form a No. 1 step sleeve, and the deicing unit 112 is inserted into the small-diameter sleeve in the No. 1 step sleeve and is detachably connected to the No. 1 step sleeve;

[0068] The deicing unit 112 includes two No. 2 spliced ​​step half shells 1121 and four ice-breaking blades 1123. The two No. 2 spliced ​​step half shells 1121 are spliced ​​to form a No. 2 step sleeve. The No. 2 step sleeve is arranged on the cable 13, and the small-diameter sleeve in the No. 2 step sleeve is inserted into the small-diameter sleeve in the No. 1 step sleeve and is detachably connected with the small-diameter sleeve in the No. 1 step sleeve. The four ice-breaking blades 1123 are fixed at equal intervals along the circumference at the end of the large-diameter sleeve in the No. 2 step sleeve, and two ice-breaking blades 1123 are fixed on each No. 2 spliced ​​step half shell 1121. The deicing assembly 11 moves synchronously with the auxiliary moving device and breaks and removes the ice layer covering the surface of the cable 13 in the forward direction through the ice-breaking blades 1123. Other components and connection methods are the same as those in the specific implementation method six.

[0069] In this embodiment, the two No. 1 spliced ​​step half shells 1111 are spliced ​​by means of pin-hole matching. A pin is provided on the splicing side of one No. 1 spliced ​​step half shell 1111, and a pin hole is provided on the splicing side of the other No. 1 spliced ​​step half shell 1111. The stability of the splicing of the two No. 1 spliced ​​step half shells 1111 is ensured by the plug-in matching of the pin and the pin hole. The two No. 1 spliced ​​step half shells 1111 are spliced ​​to form a No. 1 step sleeve. The large-diameter sleeve in the No. 1 step sleeve is a supporting part, which is used to fix the support leg 1112 and the upper shell by splicing. The small-diameter sleeve in the No. 1 step sleeve is a connecting part for connecting with the deicing unit 112. The two No. 2 spliced ​​step half shells 1121 in the deicing unit 112 are spliced ​​by means of pin-hole matching. A splicing side of one No. 2 spliced ​​step half shell 1121 is provided with a latch, and a splicing side of the other No. 2 spliced ​​step half shell 1121 is provided with a pin hole. The latch and the pin hole are plugged together to ensure the stability of the splicing of the two No. 2 spliced ​​step half shells 1121. The two No. 2 spliced ​​step half shells 1121 are spliced ​​into a The second step sleeve is a connecting part, and the small-diameter sleeve of the second step sleeve is used for inserting into the small-diameter sleeve in the first step sleeve. The installation limit is performed through the step portion of the second step sleeve and the end of the small-diameter sleeve in the first step sleeve. In order to ensure the connection stability between the fixing unit 111 and the deicing unit 112, a first deicing assembly fixing pin hole 1113 is processed on the outer wall of each first-joined step half shell 1111, and the first deicing assembly fixing pin hole 1113 is a stepped hole. The outer wall of each second-joined step half shell 1121 A No. 2 de-icing component fixing pin hole 1122 is processed on it, and the No. 2 de-icing component fixing pin hole 1122 is coaxially arranged with the No. 1 de-icing component fixing pin hole 1113. The assembled No. 2 step sleeve and the assembled No. 1 step sleeve are fixedly connected by two pins. The ice-breaking blade 1123 in the de-icing unit 112 has an inclined edge, and the upper part of the ice-breaking blade 1123 extends outward, and the lower part of the ice-breaking blade 1123 extends inward. Compared with a flat edge, such a design is conducive to increasing the impact force on the ice layer and improving the ice-breaking efficiency.

[0070] Specific implementation method eight: Combination Figures 1 to 21 This embodiment is described. The difference between this embodiment and the seventh embodiment is that a brush 1115 is installed circumferentially on the inner wall of the small-caliber sleeve in the first step sleeve. The other components and connection methods are the same as those of the seventh embodiment.

[0071] In the present embodiment, considering that the ice debris residue after breaking the ice and the water droplets produced after the ice layer melts will adhere to the surface of the cable 13, which will have a certain impact on the accuracy and safety of subsequent cable insulation detection, through the design of the brush 1115, the surface of the cable 13 can be cleaned during the movement of the No. 1 step sleeve, ensuring that the cable surface has good cleanliness when the detection component performs insulation detection on the cable.

[0072] Specific implementation method nine: Combination Figures 1 to 21 This embodiment is described. This embodiment is different from the specific embodiment 8 in that the de-icing assembly 11 further includes a heating unit 113, which is sleeved on a small-diameter sleeve in the No. 1 stepped sleeve and is detachably connected to the No. 1 stepped sleeve;

[0073] The heating unit 113 includes two heating half shells 1131 and four heating arms 1132. The two heating half shells 1131 are assembled to form a heating sleeve. The heating sleeve is mounted on the small-diameter sleeve in the No. 1 stepped sleeve and is detachably connected to the No. 1 stepped sleeve. The four heating arms 1132 are equidistantly arranged at the end of the heating sleeve facing the deicing unit 112 along the circumferential direction, and each heating half shell 1131 is provided with two heating arms 1132. One end of each heating arm 1132 is fixedly connected to the heating sleeve, and the other end of each heating arm 1132 is arranged corresponding to the outer wall of the cable 13. Other components and connection methods are the same as those in the eighth embodiment.

[0074] In this embodiment, the two heating half shells 1131 are spliced ​​together by means of pin-hole matching. A pin is provided on the splicing side of one heating half shell 1131, and a pin hole is provided on the splicing side of the other heating half shell 1131. The stability of the splicing of the two heating half shells 1131 is ensured by the plug-in matching of the pin and the pin hole. The two heating half shells 1131 are spliced ​​together to form a heating sleeve, and the heating sleeve is sleeved on the small-diameter sleeve of the No. 1 stepped sleeve. In order to ensure the connection stability between the heating sleeve and the No. 1 stepped sleeve, a No. 1 heating unit fixing is processed on the outer wall of each No. 1 spliced ​​stepped half shell 1111 Pin hole 1114, a No. 2 heating unit fixing pin hole 1133 is processed on each heating half shell 1131, and each No. 1 heating unit fixing pin hole 1114 is coaxially arranged with a No. 2 heating unit fixing pin hole 1133, and the No. 1 stepped sleeve is fixedly connected to the heating sleeve by two pins. The original design of the heating unit 113 is used to melt thicker ice layers, and cooperate with the deicing assembly 112 to improve the deicing efficiency of the cable 13. The heating sleeve in the heating unit 113 is a hollow structure with a main conductor inside. Each heating arm 1132 is also a hollow structure. Each One end of the heating arm 1132 is connected to the heating sleeve, and the other end of each heating arm 1132 is provided with a mounting block, and an electric heating network is fixed to the bottom of the mounting block. A branch conductor is provided in each heating arm 1132, and one end of the branch conductor is connected to the main conductor, and the other end of the branch conductor is connected to the electric heating network. The main conductor passes through the heating sleeve and the housing unit and is connected to the battery 4. An electronic switch is connected in series on the main conductor. The electronic switch can be integrated on the PLC controller 5 and its working state is controlled by the PLC controller 5. When the staff sees a thick layer of ice on the cable through the camera 12, they can Stop the auxiliary mobile device and melt the ice layer through the heating unit 113, and start the auxiliary mobile device to continue working after the strength of the ice layer is low; in order to avoid interference between the heating support arm 1132 and the ice-breaking blade 1123, the heating support arm 1132 and the ice-breaking blade 1123 are staggered, and in order to make the distance between the electric heating network and the cable 13 closer, the heating support arm 1132 is arranged with a bent arm body, and in order to improve the heating efficiency of the electric heating network, the bottom of the mounting block can be arranged with an arc surface, and the electric heating network is also arranged in an arc shape to correspond to the circumferential surface of the cable.

[0075] Specific implementation method ten: Combination Figures 1 to 21 This embodiment is described. The difference between this embodiment and the eighth embodiment is that a camera 12 is also installed on the top of the front end of the upper shell 1. The shooting end of the camera 12 is arranged toward the cable 13 in front of the deicing assembly 11. The power input end of the camera 12 is connected to the power output end of the battery 4 through a wire. The other components and connection methods are the same as those of the ninth embodiment.

[0076] In this embodiment, the camera 12 is mainly used to observe the cable 13 in the forward direction. The staff can judge the ice coverage on the cable 13 through the image content transmitted in real time by the camera 12, and thus determine whether to enable the heating unit 113 to melt the ice layer, or directly stop the detection work to ensure the safety of the cable under test.

[0077] The present invention has been disclosed as above with preferred implementation cases, but it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent implementation cases with equivalent changes by using the above-disclosed structures and technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above implementation cases based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0078] How it works

[0079] The working principle of the present application is explained below using the frequency domain reflector as a detection component. When the frequency domain reflector 6 is used as a detection component, the main body of the frequency domain reflector needs to be installed in the housing unit, and the signal transmitting and receiving ends of the frequency domain reflector need to be clamped in the detection component clamping assembly 7 and aligned with the signal transmitting and receiving ends to the cable under test. First, a frequency domain reflector mounting frame is set on the carrier plate 3 and the frequency domain reflector 6 is mounted on the carrier plate 3 through the frequency domain reflector mounting frame. Other components are assembled according to the connection relationship described in the specific implementation manner (the detection component clamping assembly 7 and the de-icing assembly 11 are installed later), and the assembled auxiliary mobile device is lifted onto the cable 13 through the lifting mechanism to ensure that the two moving assemblies 8 can be hung on the cable 13. When the worker is transported to the vicinity of the auxiliary mobile device by a ladder, the worker completes the installation of the detection component clamping assembly 7 and the de-icing assembly 11. It is worth noting that the line layout has been completed when the shell unit is assembled, and a plurality of wiring jacks are set on the outer top of the upper shell 1. When installing in the later stage, the wires need to be inserted into the corresponding wiring jacks to realize the connection between the subsequent components and the battery 4, the PLC controller 5 and the main body of the frequency domain reflector 6. When installing the detection component clamping assembly 7, first install the signal transmitting and receiving ends of the frequency domain reflector in the cavity composed of the No. 1 installation groove 73 and the No. 2 installation groove 77, and then the No. 1 spliced ​​half shell 71 and the No. 2 spliced ​​half shell 75 are spliced ​​and fixed to form the detection component clamping assembly. Component 7 is installed, and then the mounting feet in the detection component clamping component 7 are installed on the outer top of the upper shell 1 through bolts. Finally, the signal transmitting and receiving ends are connected to the main body of the frequency domain reflector 6 through the transmitting lead and the receiving lead respectively. At the same time, the waveform image is transmitted to the remote control center through the signal transmitter integrated on the frequency domain reflector 6, so that the staff of the remote control center can observe the waveform shape at the intact insulation. After the detection component clamping component 7 is installed, the deicing component 11 is installed according to the contents of the specific implementation method. After the deicing component 11 is installed, the staff of the remote control center can drive the moving component 8 to move along the extension direction of the cable 13 to the PLC controller 5, and the on-site installation staff can check the device. The stability of operation, after confirming that the auxiliary mobile device can move stably, the on-site installation staff descends to the ground. At this time, the auxiliary mobile device carries the distribution cable live insulation defect detection component to perform detection work along the extension direction of the cable 13. The camera 12 is used to observe the surface ice coverage of the cable 13. When the ice layer is found to be too thick, the remote staff controls the heating unit 113 to work through the PLC controller 5 to melt the ice, and then continue to complete the detection work. When the image feedback from the camera 12 finds that the shaking amplitude of the mobile device is too large, the remote staff controls the heating wire reserved in the sling 104 through the PLC controller 5 to heat it, and tries to increase the working sensitivity of the wind damping unit 10 to eliminate the shaking amplitude of the mobile device.If the desired effect is achieved, the detection work will continue. If the detection effect cannot be achieved, the detection work will be stopped. The detection method using the frequency domain reflector 6 as the detection component is to judge the cable insulation defect through the peak change of the reflected waveform transmitted by the frequency domain reflector. During the detection process, if the reflected waveform remains continuous and the peak value is uniform, it proves that the cable is intact and there is no insulation defect. If there is an obvious peak change in the reflected waveform, it proves that the insulation of the tested cable is defective. The staff can judge the specific location of the insulation defect according to the total length of the cable and the movement distance of the mobile device, so as to achieve the purpose of detecting and locating the cable insulation defect.

Claims

1. An auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables, characterized in that: The auxiliary moving device comprises a housing unit, a storage battery (4), a PLC controller (5), a detection component clamping assembly (7) and two moving assemblies (8). The storage battery (4) and the PLC controller (5) are both installed in the housing unit, and the power input end of the PLC controller (5) is connected to the power output end of the storage battery (4) through a wire. The two moving assemblies (8) are both installed on the outer top of the housing unit, and the housing unit is hung on a cable (13) through the two moving assemblies (8). The two moving assemblies (8) drive the housing unit to reciprocate along the length direction of the cable (13). The power input end of each moving assembly (8) is connected to the power output end of the storage battery (4) through a wire, and the signal input end of each moving assembly (8) is connected to the signal output end of the PLC controller (5) through a wire. The detection component clamping assembly (7) is installed on the outer top of the housing unit, and the detection component clamping assembly (7) is arranged between the two moving assemblies (8). The detection component clamping assembly (7) clamps the detection component located on the cable (13) and drives the detection component and the housing unit to move synchronously.

2. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 1, characterized in that: The housing unit comprises an upper housing (1), a lower housing (2) and a bearing plate (3); the top of the lower housing (2) is an open end and the bottom is a closed end; the bearing plate (3) is arranged at the opening of the lower housing (2) and is detachably connected to the lower housing (2); the top of the upper housing (1) is a closed end and the bottom is an open end; the upper housing (1) is buckled on the lower housing (2) and is detachably connected to the bearing plate (3); the connection between the upper housing (1) and the lower housing (2) is sealed by a sealing strip; the storage battery (4) is located in a cavity formed by the lower housing (2) and the bearing plate (3), and the storage battery (4) is detachably connected to the inner bottom of the lower housing (2) through a battery mounting seat; the PLC controller (5) is located in a cavity formed by the upper housing (1) and the bearing plate (3), and the PLC controller (5) is detachably connected to the top of the bearing plate (3) through a controller mounting seat; the detection component clamping assembly (7) and two moving assemblies (8) are all mounted on the outer top of the upper housing (1).

3. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 2, characterized in that: The detection component clamping assembly (7) comprises a first splicing unit and a second splicing unit, and the first splicing unit and the second splicing unit are spliced ​​and fixed to form the detection component clamping assembly (7); The first splicing unit comprises a first splicing half shell (71) and a first mounting foot (72), one end of the first mounting foot (72) is fixedly connected to the outer wall of the first splicing half shell (71), and a first wiring hole (74) is processed at the end of the first splicing half shell (71); The second splicing unit comprises a second splicing half shell (75) and a second mounting foot (76), one end of the second mounting foot (76) is fixedly connected to the outer wall of the second splicing half shell (75), and a second wiring hole (78) is processed at the end of the second splicing half shell (75); The first assembled half shell (71) and the second assembled half shell (75) are assembled and fixed to form a clamping portion of the detection component, and the clamping portion of the detection component is installed on the outer top of the upper shell (1) through the first mounting foot (72) and the second mounting foot (76).

4. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 3, characterized in that: The moving assembly (8) comprises a connecting frame (81), a buckle shell (82), a motor (83), an active bevel gear (84), a driven bevel gear (85), a spline shaft (86), a driving wheel (87), two side clamping wheels (88) and two return springs (89), the connecting frame (81) is mounted on the outer top of the upper shell (1), the buckle shell (82) is buckled on one side of the connecting frame (81), and the buckle shell (82) is fixedly connected to the connecting frame (81), the motor (83) is arranged in a cavity formed by the buckle shell (82) and the connecting frame (81), and the shell of the motor (83) is connected to the motor through a motor connecting seat The motor (83) is detachably connected to the inner bottom of the buckle shell (82), the driving bevel gear (84) is sleeved on the power output shaft of the motor (83), the power input end of the motor (83) is connected to the power output end of the battery (4) through a wire, the signal input end of the motor (83) is connected to the signal output end of the PLC controller (5) through a wire, the spline shaft (86) is inserted in the connecting frame (81), and the spline shaft (86) is rotatably connected to the connecting frame (81) through a bearing, one end of the spline shaft (86) passes through the connecting frame (81) and is inserted in the driven bevel gear (85) located in the buckle shell (82), and The driven bevel gear (85) is transmission-connected with the driving bevel gear (84); the driving wheel (87) and the two side clamping wheels (88) are both located in the connecting frame (81); the driving wheel (87) is sleeved on the middle part of the spline shaft (86), and the driving wheel (87) is fixedly connected to the spline shaft (86); the two side clamping wheels (88) are sleeved on the spline shaft (86), and the two side clamping wheels (88) are relatively arranged at the two ends of the driving wheel (87); each side clamping wheel (88) is slidably connected to the spline shaft (86), and a spacer is provided between each side clamping wheel (88) and the connecting frame (81). A return spring (89) is sleeved on the spline shaft (86), one end of the return spring (89) is rotatably connected to one end of a side clamping wheel (88) away from the driving wheel (87), and the other end of the return spring (89) is fixedly connected to the inner wall of the adjacent connecting frame (81), the driving wheel (87) is located at the top of the cable (13) and can reciprocate along the extension direction of the cable (13) under the drive of the motor (3), and the two side clamping wheels (88) are located on both sides of the cable (13) and limit the cable (13) under the elastic force of the return spring (89).

5. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 4, characterized in that: The auxiliary moving device further comprises two clamping units (9), each clamping unit (9) being arranged corresponding to a moving assembly (8), the two clamping units (9) being arranged in a cavity formed by the upper shell (1) and the carrying plate (3), and the bottom end of each clamping unit (9) being detachably connected to the carrying plate (3), and the top end of each clamping unit (9) extending to the outer top of the upper shell (1) and cooperating with a driving wheel (87) arranged corresponding thereto to longitudinally clamp the cable (13); The clamping unit (9) comprises an electric cylinder fixing seat (91), an electric cylinder (92), a wheel frame (93) and a bottom clamping wheel (94); the electric cylinder fixing seat (91) is arranged on the top of the bearing plate (3) and is detachably connected to the bearing plate (3) by bolts; the electric cylinder (92) is inserted into the electric cylinder fixing seat (91) in a vertical direction, and the housing of the electric cylinder (92) is detachably connected to the electric cylinder fixing seat (91); the wheel frame (93) is arranged at the end of the piston rod in the electric cylinder (92), and the wheel frame (93) ) is detachably connected to the electric cylinder (92), the bottom clamping wheel (94) is arranged in the wheel frame (93), and the bottom clamping wheel (94) is rotatably connected to the wheel frame (93), the bottom clamping wheel (94) cooperates with the driving wheel (87) correspondingly arranged thereto to longitudinally clamp the cable (13), the power input end of the electric cylinder (92) is connected to the power output end of the battery (4) through a wire, and the signal input end of the electric cylinder (92) is connected to the signal output end of the PLC controller (5) through a wire.

6. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 5, characterized in that: The auxiliary movement device further comprises a wind damping unit (10), the damping unit (10) being arranged in a cavity formed by the upper shell (1) and the bearing plate (3), and the damping unit (10) being detachably connected to the inner top of the upper shell (1); The wind damping unit (10) comprises a top mounting plate (101), a fixing ring (102), a weight ball (103) and four slings (104); the top mounting plate (101) is located at the inner top of the upper shell (1), and the top mounting plate (101) is detachably connected to the upper shell (1); the fixing ring (102) is suspended directly below the top mounting plate (101) by the four slings (104); and the weight ball (103) is installed in the fixing ring (102).

7. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 6, characterized in that: The auxiliary mobile device also includes a deicing assembly (11), the deicing assembly (11) being located at one end of the upper shell (1) close to the forward direction of the auxiliary mobile device, the deicing assembly (11) comprising a fixing unit (111) and a deicing unit (112), the fixing unit (111) being mounted on the outer top of the upper shell (1), the deicing unit (112) being mounted on the fixing unit (111), and the deicing unit (112) being sleeved on the cable (13); The fixing unit (111) comprises two spliced ​​fixing parts, each of which comprises a No. 1 spliced ​​step half shell (1111) and a spliced ​​fixing leg (1112), one end of the spliced ​​fixing leg (1112) is fixedly connected to the outer wall of the large-diameter half shell in the No. 1 spliced ​​step half shell (1111), and the other end of the spliced ​​fixing leg (1112) is mounted on the outer top of the upper shell (1), the two No. 1 spliced ​​step half shells (1111) are spliced ​​to form a No. 1 step sleeve, and the deicing unit (112) is inserted into the small-diameter sleeve in the No. 1 step sleeve and is detachably connected to the No. 1 step sleeve; The deicing unit (112) comprises two No. 2 spliced ​​step half shells (1121) and four ice-breaking blades (1123). The two No. 2 spliced ​​step half shells (1121) are spliced ​​together to form a No. 2 step sleeve. The No. 2 step sleeve is arranged on the cable (13), and the small-diameter sleeve in the No. 2 step sleeve is inserted into the small-diameter sleeve in the No. 1 step sleeve and is detachably connected to the small-diameter sleeve in the No. 1 step sleeve. The four ice-breaking blades (1123) are fixed at equal intervals along the circumferential direction to the ends of the large-diameter sleeve in the No. 2 step sleeve, and two ice-breaking blades (1123) are fixed on each No. 2 spliced ​​step half shell (1121). The deicing assembly (11) moves synchronously with the auxiliary moving device and breaks and removes the ice layer covering the surface of the cable (13) in the forward direction through the ice-breaking blades (1123).

8. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 1, characterized in that: A brush (1115) is circumferentially mounted on the inner wall of the small-caliber sleeve in the No. 1 stepped sleeve.

9. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 8, characterized in that: The deicing assembly (11) also includes a heating unit (113), which is sleeved on the small-caliber sleeve in the No. 1 stepped sleeve and is detachably connected to the No. 1 stepped sleeve; The heating unit (113) comprises two heating half shells (1131) and four heating arms (1132). The two heating half shells (1131) are assembled to form a heating sleeve. The heating sleeve is mounted on a small-diameter sleeve in a No. 1 stepped sleeve and is detachably connected to the No. 1 stepped sleeve. The four heating arms (1132) are equidistantly arranged at the end of the heating sleeve facing one end of the deicing unit (112) along the circumferential direction. Two heating arms (1132) are arranged on each heating half shell (1131). One end of each heating arm (1132) is fixedly connected to the heating sleeve, and the other end of each heating arm (1132) is arranged corresponding to the outer wall of the cable (13).

10. The auxiliary mobile device used in the detection and positioning of local insulation defects in distribution cables according to claim 9, characterized in that: A camera (12) is also installed at the top of the front end of the upper shell (1), the shooting end of the camera (12) is arranged toward the cable (13) in front of the deicing component (11), and the power input end of the camera (12) is connected to the power output end of the battery (4) through a wire.

Images