Power supply maintenance device and detection method of rail transit traction power supply contact network

Abstract

The invention discloses a power supply maintenance device and a detection method of a rail transit traction power supply contact network, and relates to the field of power supply maintenance equipment. According to the invention, the cable detector can be driven to move along the cable through the moving trolley, so that automatic detection of the cable is realized through cooperation of the moving trolley and the cable detector, and a worker does not need to hold the cable detector by hand to climb along the overhead line system cable for maintenance or take a high-altitude operation vehicle to maintain the overhead line system cable. The power supply maintenance of the aerial cable is more convenient and safer; and during maintenance, the multiple substrates are sequentially rotated and adjusted and then are connected end to end through the buckle assemblies to wrap the cable, and meanwhile, the walking wheels on the inner side surfaces of the substrates are circumferentially distributed and abut against the surface of the cable, so that the mobile trolley can be conveniently and rapidly installed on the cable to be maintained, and the convenience of cable maintenance is further improved.

Description

Technical Field

[0001] The present invention belongs to the field of power supply maintenance equipment, and in particular, relates to a power supply maintenance device and a detection method for a rail transit traction power supply contact network. Background Art

[0002] The overhead line for traction power supply of rail transit is a high-voltage transmission line that is erected in a zigzag shape above the rails in electrified railways and is used by pantographs to draw current. The overhead line is the main structure of the railway electrification project and is a special form of transmission line erected above the railway line to supply power to electric locomotives.

[0003] In order to ensure the stability of the contact network power supply in the prior art, the contact network needs to be regularly inspected and maintained. Since the contact network is installed in the air, when the contact network is powered on and maintained, workers are required to climb along the contact network for maintenance, or take an aerial work vehicle to inspect the contact network. This is not only cumbersome to operate, but also poses a great safety hazard. Summary of the invention

[0004] In view of the problems in the related technology, the present invention proposes a power supply maintenance device and a detection method for a rail transit traction power supply contact network to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a power supply maintenance device, comprising a mobile trolley capable of traveling on a cable and a cable detector mounted on the mobile trolley for inspecting the cable, wherein the mobile trolley comprises a plurality of substrates and a buckle assembly, wherein a travel wheel is rotatably mounted on the inner side surface of each substrate, and the plurality of substrates are rotatably connected in sequence, so that the plurality of substrates can wrap the cable inside by connecting the end to the end of the buckle assembly after rotation, and the travel wheels on the inner side surface of the substrate are circumferentially distributed and abut against the surface of the cable;

[0007] The interior of the mobile trolley is also equipped with a travel drive mechanism for driving the travel wheels to rotate, and the travel drive mechanism includes a rotation drive assembly, a plurality of drive shafts and a plurality of movable transmission assemblies. The plurality of drive shafts are respectively rotatably mounted on the inner side surfaces of the corresponding substrates, and the adjacent drive shafts are transmission-connected via the movable transmission assembly, and the movable transmission assembly can always maintain the transmission connection between the two drive shafts when the adjacent substrates are rotated for angle adjustment. The rotation drive assembly is mounted on the inner side surface of one of the substrates and is transmission-connected to the drive shaft on the inner side surface of the substrate;

[0008] The inner side of the base plate is also provided with an adjustment mechanism for connecting and installing the walking wheel, the adjustment mechanism includes an elastic telescopic component and a telescopic transmission component, the walking wheel is rotatably installed on the inner side of the base plate through the elastic telescopic component, and the telescopic transmission component is transmission-connected between the drive shaft and the walking wheel;

[0009] A storage battery electrically connected to the cable detector and the rotary drive assembly is also installed inside the mobile vehicle.

[0010] Furthermore, the buckle assembly includes two groups of connecting buckles, and the two groups of connecting buckles are respectively fixedly installed on the outer edges of the base plate at the head and tail ends, and the two groups of connecting buckles can be locked and fixed by locking bolts.

[0011] Furthermore, three base plates are provided, and adjacent base plates are rotatably connected via hinges;

[0012] The driving shaft includes a main driving shaft and two auxiliary driving shafts. The main driving shaft is rotatably installed on the inner side surface of the middle base plate, and the two auxiliary driving shafts are rotatably installed on the inner side surfaces of the base plates on both sides respectively. The main driving shaft and the two auxiliary driving shafts are connected to the walking wheels on the corresponding base plates through a telescopic transmission assembly.

[0013] Furthermore, the rotary drive assembly includes a motor and a driven bevel gear, the motor is fixedly mounted on the inner side of the middle base plate, the output end of the motor is transmission-mounted with a driving bevel gear, the driven bevel gear is fixedly mounted on the main drive shaft, and the driving bevel gear is meshingly transmission-connected with the driven bevel gear.

[0014] Furthermore, the movable transmission assembly includes a transmission gear and a transmission shaft 1. The transmission gear is fixedly mounted on the end of the main drive shaft. The transmission shaft 1 is rotatably mounted on the bottom surface of the intermediate base plate and is arranged parallel to the main drive shaft. A transmission bevel gear 1 and a driven gear are fixedly mounted on the transmission shaft 1. The driven gear is meshed and connected with the transmission gear.

[0015] Furthermore, the movable transmission assembly also includes a transmission shaft 2 and a transmission bevel gear 4. The transmission shaft 2 is rotatably mounted on the bottom surface of the intermediate base plate. One end of the transmission shaft 2 is fixedly mounted with a transmission bevel gear 2 which is meshingly connected to the transmission bevel gear 1. The other end of the transmission shaft 2 is fixedly mounted with a transmission bevel gear 3. The transmission bevel gear 4 is fixedly mounted on one end of the auxiliary drive shaft and is meshingly connected to the transmission bevel gear 3.

[0016] Further, the elastic telescopic component includes a main shaft. A telescopic sliding hole is formed inside the main shaft. A slider is slidably installed inside the telescopic sliding hole. A pressure spring is abutted and installed at the inner end of the slider. An outer end of the slider is fixedly installed with a telescopic shaft extending outside the main shaft. One end of the telescopic shaft is fixedly installed with a connecting plate. A traveling wheel is rotatably installed on one side of the connecting plate.

[0017] Further, the telescopic transmission component includes a driving wheel, a driven wheel and a tensioning unit. The driving wheel is fixedly installed on the driving shaft. The driven wheel is fixedly installed at the end of the traveling wheel. The driving wheel and the driven wheel are connected by a transmission belt in a transmission manner. The tensioning unit is installed on the main shaft and can abut and tension the transmission belt.

[0018] Further, the tensioning unit includes a positioning ring. The positioning ring is fixedly installed on the outer ring at the bottom end of the main shaft. A positioning rod is fixedly installed at the bottom end of the positioning ring. A sliding plate is slidably installed inside the positioning rod through a chute. A tensioning spring is abutted and installed at the inner end of the sliding plate. An outer end of the sliding plate is fixedly installed with a telescopic rod. A tensioning wheel abutted against the surface of the transmission belt is rotatably installed at the outer end of the telescopic rod.

[0019] The present invention also discloses a detection method for a rail transit traction power supply catenary, and the specific steps are as follows:

[0020] First, after rotating and adjusting the angles of a plurality of substrates, the cable where the rail transit traction power supply catenary is located is covered by connecting the substrates end to end through a buckle assembly. At the same time, the traveling wheels on the inner sides of the plurality of substrates abut against the outer surface of the cable under the telescopic adjustment of the elastic telescopic component, and the plurality of traveling wheels are evenly distributed at equal intervals in a circle on the outer circle of the cable.

[0021] After that, the driving shaft connected thereto is driven to rotate by the rotary driving component. At the same time, the driving shaft drives other driving shafts to rotate synchronously through the movable transmission component. When the driving shaft rotates, the corresponding traveling wheels are driven to rotate synchronously on the cable surface through the telescopic transmission component. Furthermore, the rotation of the traveling wheels drives the mobile trolley and the cable detector to move along the cable, and the cable detector can perform power supply maintenance on the cable when moving along the cable.

[0022] The present invention has the following beneficial effects:

[0023] 1. In the present invention, the cable detector can be driven by the mobile trolley to move along the cable, so that the automatic detection of the cable can be realized through the cooperation of the mobile trolley and the cable detector, without the need for the staff to hold the cable detector and climb along the contact network cable for maintenance, or to take an aerial work vehicle to inspect the contact network cable, so that the power supply maintenance of the aerial cable is more convenient and safe; and during maintenance, the multiple base plates are rotated and adjusted in sequence and then connected end to end through the snap assembly to cover the cable, and at the same time, the running wheels on the inner side of the base plate are distributed in a circle and abut against the surface of the cable, so that the mobile trolley can be conveniently and quickly installed on the cable to be inspected, further improving the convenience of cable maintenance.

[0024] 2. In the present invention, a driving shaft connected to it is driven to rotate by a rotating driving assembly, and at the same time, the driving shaft drives other driving shafts to rotate synchronously through a movable transmission assembly. When the driving shaft rotates, the corresponding walking wheels are driven to rotate synchronously on the cable surface through the telescopic transmission assembly, and then the mobile trolley and the cable detector are driven to move along the cable through the rotation of the walking wheels. The driving shafts on each substrate are connected by a movable transmission assembly, so that only one driving shaft needs to be driven to rotate, and all driving shafts and walking wheels can be driven to rotate synchronously, and the movable transmission assembly can always maintain the transmission connection between two adjacent driving shafts when the adjacent substrates are rotated for angle adjustment, so as to ensure that when the rotating driving assembly is working, all driving shafts and walking wheels can be driven to rotate synchronously, which not only makes the driving of the walking wheels more convenient, but also ensures that the walking wheels on all substrates rotate synchronously, so that the walking wheels can drive the mobile trolley to move stably on the cable, thereby ensuring the normal progress of the maintenance process.

[0025] 3. In the present invention, when multiple substrates are connected end to end to wrap the cable inside, the running wheels on the inner side of the substrate abut against the outer surface of the cable under the telescopic adjustment of the elastic telescopic component. The running wheels are installed through the elastic telescopic component, so that the running wheels can abut against the cable surface under the elastic pressure of the elastic telescopic component, thereby improving the stability of the contact between the running wheels and the cable. At the same time, through the telescopic adjustment of the elastic telescopic component, the spacing between each running wheel can be adjusted, so that the mobile cart can be installed on cables of different diameters through the running wheels to inspect and repair cables of different diameters, thereby improving the applicability of the equipment; and when the elastic telescopic component is telescopically adjusted, the telescopic transmission component can be telescopically adjusted accordingly, so that the driving shaft and the running wheel always maintain a transmission connection, ensuring that when the driving shaft rotates, it can drive the running wheel to rotate and move.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions of the embodiments of the invention, the following will briefly introduce the attached drawings required for describing the embodiments. Obviously, the attached drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0028] Figure 1 One of the three-dimensional structure diagrams of the power supply maintenance device of the present invention;

[0029] Figure 2 For the present invention Figure 1 The partial enlarged structure diagram at position A;

[0030] Figure 3 Another three-dimensional structure diagram of the power supply maintenance device of the present invention;

[0031] Figure 4 The structure diagram of the end face of the power supply maintenance device of the present invention;

[0032] Figure 5 The third three-dimensional structure diagram of the power supply maintenance device of the present invention;

[0033] Figure 6 For the present invention Figure 5 The partial enlarged structure diagram at position B;

[0034] Figure 7 The fourth three-dimensional structure diagram of the power supply maintenance device of the present invention;

[0035] Figure 8 For the present invention Figure 7 The partial enlarged structure diagram at position C.

[0036] In the figure: 1, mobile trolley; 11, base plate; 12, hinge; 13, walking wheel; 14, connecting buckle; 15, locking bolt; 2, walking drive mechanism; 21, motor; 22, driving bevel gear; 23, driven bevel gear; 24, main drive shaft; 25, transmission gear; 26, first transmission bevel gear; 27, driven gear; 28, auxiliary drive shaft; 29, first transmission shaft; 210, second transmission bevel gear; 211, second transmission shaft; 212, third transmission bevel gear; 213, fourth transmission bevel gear; 3, adjustment mechanism; 31, main shaft; 32, telescopic shaft; 33, connecting plate; 34, driving wheel; 35, transmission belt; 36, driven wheel; 37, tensioning wheel; 38, telescopic sliding hole; 39, compression spring; 310, slider; 311, positioning ring; 312, positioning rod; 313, tensioning spring; 314, sliding plate; 315, telescopic rod; 4, cable detector; 5, storage battery; 100, cable. Detailed implementation manners

[0037] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0038] In the description of the present invention, it is necessary to understand that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention.

[0039] Embodiment 1

[0040] See also Figure 1 , Figure 2 As shown, the present invention is a power supply maintenance device, comprising a mobile trolley 1 that can travel on a cable 100 and a cable detector 4 installed on the mobile trolley 1 for repairing the cable 100. The mobile trolley 1 comprises a plurality of substrates 11 and buckle assemblies, and a travel wheel 13 is rotatably installed on the inner side of each substrate 11. The plurality of substrates 11 are rotatably connected in sequence, so that the plurality of substrates 11 can cover the cable 100 by connecting the end to the end of the buckle assembly after rotation, and at the same time, the travel wheels 13 on the inner side of the substrate 11 are distributed in a circle and abut against the surface of the cable 100; the interior of the mobile trolley 1 also contains a travel drive mechanism 2 for driving the travel wheel 13 to rotate, and the travel drive mechanism 2 comprises a rotation drive assembly, a plurality of drive shafts and a plurality of movable transmission assemblies, and the plurality of drive shafts are rotatably installed respectively. On the inner side of the corresponding substrate 11, the adjacent drive shafts are connected by a movable transmission component, and the movable transmission component can always maintain the transmission connection between the two drive shafts when the adjacent substrates 11 are rotated for angle adjustment. The rotary drive component is installed on the inner side of one of the substrates 11 and is connected to the drive shaft on the inner side of the substrate 11; the inner side of the substrate 11 is also installed with an adjustment mechanism 3 for connecting and installing the running wheel 13, the adjustment mechanism 3 includes an elastic telescopic component and a telescopic transmission component, the running wheel 13 is rotatably installed on the inner side of the substrate 11 through the elastic telescopic component, and the telescopic transmission component is connected to the drive shaft and the running wheel 13; the mobile trolley 1 is also installed with a battery 5 electrically connected to the cable detector 4 and the rotary drive component;

[0041] Specifically, when performing power supply maintenance on the cable 100, first, after rotating and adjusting the angles of multiple substrates 11, the cable 100 is wrapped by connecting the substrates 11 end to end through the buckle assembly. At the same time, the traveling wheels 13 on the inner sides of the multiple substrates 11 are abutted against the outer surface of the cable 100 under the telescopic adjustment of the elastic telescopic assembly, and the multiple traveling wheels 13 are circumferentially and equidistantly distributed on the outer circle of the cable 100. Then, the rotation drive assembly is used to drive the drive shaft connected thereto to rotate. At the same time, the drive shaft drives other drive shafts to rotate synchronously through the movable transmission assembly. When the drive shaft rotates, the corresponding traveling wheels 13 are driven to rotate synchronously on the surface of the cable 100 through the telescopic transmission assembly. Furthermore, the rotation of the traveling wheels 13 drives the mobile trolley 1 and the cable detector 4 to move along the cable 100, and the cable detector 4 can perform power supply maintenance on the cable while moving along the cable 100.

[0042] Among them, the cable detector 4 is driven by the mobile trolley 1 to move along the cable 100, so that the automatic maintenance of the cable 100 is realized through the cooperation of the mobile trolley 1 and the cable detector 4, without the need for the staff to hold the cable detector 4 and climb along the contact network cable for maintenance, or to take an aerial work vehicle to inspect the cable 100, making the power supply maintenance of the aerial cable 100 more convenient and safe; and during maintenance, the multiple substrates 11 are rotated and adjusted in sequence and then connected end to end through the snap assembly to cover the cable 100, and at the same time, the walking wheels 13 on the inner side of the substrate 11 are distributed in a circle and abut against the surface of the cable 100, so that the mobile trolley 1 can be conveniently and quickly installed on the cable 100 to be repaired, further improving the convenience of cable 100 maintenance; the driving shafts on each substrate 11 are connected by a movable transmission assembly, so that only one driving shaft needs to be driven to rotate, which can drive all driving shafts and the walking wheels 13 to rotate synchronously, and the movable transmission assembly can always maintain the transmission between the two adjacent driving shafts when the adjacent substrates 11 are rotated for angle adjustment. The travel wheel 13 is connected to ensure that when the rotary drive component is working, it can drive all the driving shafts and the walking wheel 13 to rotate synchronously, which not only makes the driving of the walking wheel 13 more convenient, but also ensures that the walking wheels 13 on all the substrates 11 rotate synchronously, so that the walking wheel 13 can drive the mobile trolley 1 to move stably on the cable 100, ensuring the normal progress of the maintenance process; the walking wheel 13 is installed through an elastic telescopic component, so that the walking wheel 13 can abut against the surface of the cable 100 under the elastic pressure of the elastic telescopic component, thereby improving the stability of the contact between the walking wheel 13 and the cable 100, and at the same time, through the telescopic adjustment of the elastic telescopic component, the spacing between each walking wheel 13 can be adjusted, so that the mobile trolley 1 can be installed on cables 100 of different diameters through the walking wheel 13 to repair cables 100 of different diameters, thereby improving the applicability of the equipment; and when the elastic telescopic component is telescopically adjusted, the telescopic transmission component can be telescopically adjusted accordingly, so that the transmission connection between the driving shaft and the walking wheel 13 is always maintained, ensuring that when the driving shaft rotates, the walking wheel 13 can be driven to rotate and walk.

[0043] Furthermore, the snap-on assembly includes two groups of connecting buckles 14, which are respectively fixedly installed on the outer edges of the base plate 11 at the head and tail ends, and the two groups of connecting buckles 14 can be locked and fixed by locking bolts 15. The two base plates 11 connected head to tail are locked and fixed by the connecting buckles 14 and the locking bolts 15, which can improve the firmness of the connection between the two base plates 11 connected head to tail, thereby improving the stability of the mobile trolley 1 installed on the cable 100.

[0044] Embodiment 2

[0045] See also Figures 1 - 4As shown, the difference between this embodiment and the above embodiment is that three base plates 11 are provided, and adjacent base plates 11 are rotatably connected by hinges 12; the driving shaft includes a main driving shaft 24 and two auxiliary driving shafts 28, the main driving shaft 24 is rotatably mounted on the inner side surface of the middle base plate 11, and the two auxiliary driving shafts 28 are rotatably mounted on the inner side surfaces of the base plates 11 on both sides, and the main driving shaft 24 and the two auxiliary driving shafts 28 are transmission-connected with the walking wheels 13 on the corresponding base plates 11 through a telescopic transmission assembly; the rotary driving assembly includes a motor 21 and a driven bevel gear 23, the motor 21 is fixedly mounted on the inner side surface of the middle base plate 11, and the output end of the motor 21 is transmission-installed with a driving bevel gear 22, the driven bevel gear 23 is fixedly mounted on the main driving shaft 24, and the driving bevel gear 22 is meshed and transmission-connected with the driven bevel gear 23;

[0046] The movable transmission assembly includes a transmission gear 25 and a transmission shaft 29. The transmission gear 25 is fixedly mounted on the end of the main drive shaft 24. The transmission shaft 29 is rotatably mounted on the bottom surface of the intermediate base plate 11 and is arranged parallel to the main drive shaft 24. A transmission bevel gear 26 and a driven gear 27 are fixedly mounted on the transmission shaft 29. The driven gear 27 is meshed and connected to the transmission gear 25. The movable transmission assembly also includes a transmission shaft 211 and a transmission bevel gear 4 213. The transmission shaft 211 is rotatably mounted on the bottom surface of the intermediate base plate 11. A transmission bevel gear 210 meshed and connected to the transmission bevel gear 26 is fixedly mounted on one end of the transmission shaft 211. A transmission bevel gear 3 212 is fixedly mounted on the other end of the transmission shaft 211. The transmission bevel gear 4 213 is fixedly mounted on one end of the auxiliary drive shaft 28 and meshed and connected to the transmission bevel gear 3 212.

[0047] Among them, when the three substrates 11 are rotated and wrapped around the surface of the cable 100, the included angle between the main drive shaft 24 and the auxiliary drive shaft 28 is synchronously rotated and changed. At this time, the auxiliary drive shaft 28 drives the fourth transmission bevel gear 213 to rotate and move circumferentially along the outer ring of the third transmission bevel gear 212, so that the fourth transmission bevel gear 213 and the third transmission bevel gear 212 are always in a meshed state, and further makes the main drive shaft 24 and the auxiliary drive shaft 28 always in a meshed state. During power supply and maintenance, the motor 21 is used to drive the rotation of the driving bevel gear 22, and the driving bevel gear 22 meshes with and drives the rotation of the driven bevel gear 23, thereby driving the rotation of the main drive shaft 24. When the main drive shaft 24 rotates, it drives the rotation of the first transmission shaft 29 and the first transmission bevel gear 26 through the meshing transmission of the transmission gear 25 and the driven gear 27. Then, the first transmission bevel gear 26 meshes with and drives the rotation of the second transmission bevel gear 210 to drive the rotation of the second transmission shaft 211 and the third transmission bevel gear 212. The third transmission bevel gear 212 then meshes with and drives the rotation of the fourth transmission bevel gear 213, so that the fourth transmission bevel gear 213 drives the auxiliary drive shaft 28 to rotate synchronously with the main drive shaft 24. Finally, the auxiliary drive shaft 28 and the main drive shaft 24 drive all the traveling wheels 13 to rotate synchronously to drive the mobile trolley 1 to move along the cable 100.

[0048] Embodiment 3

[0049] Please refer to Figures 5 - 8 As shown, the difference between this embodiment and the above embodiment is that the elastic telescopic assembly includes a main shaft 31. An expansion and contraction slide hole 38 is formed inside the main shaft 31. A slider 310 is slidably installed inside the expansion and contraction slide hole 38. A compression spring 39 is abutted and installed at the inner end of the slider 310. An expansion and contraction shaft 32 extending to the outside of the main shaft 31 is fixedly installed at the outer end of the slider 310. One end of the expansion and contraction shaft 32 is fixedly installed with a connecting plate 33. A traveling wheel 13 is rotatably installed on one side of the connecting plate 33; the telescopic transmission assembly includes a transmission wheel 34, a driven wheel 36 and a tensioning unit. The transmission wheel 34 is fixedly installed on the drive shaft. The driven wheel 36 is fixedly installed at the end of the traveling wheel 13. The transmission wheel 34 and the driven wheel 36 are connected by a transmission belt 35. The tensioning unit is installed on the main shaft 31 and can abut and tension the transmission belt 35;

[0050] When the substrate 11 rotates and wraps around the outer circumference of the cable 100, the traveling wheels 13 on the inner side of the substrate 11 abut against the outer surface of the cable 100. Then, as the substrate 11 gradually closes and wraps, the traveling wheels 13, under the abutting action of the cable 100, slide the telescopic shaft 32 towards the inside of the main shaft 31, causing the slider 310 to slide towards the inside of the telescopic sliding hole 38 and compressing the compression spring 39 until the head and tail of the substrate 11 are butted to complete the installation of the mobile trolley 1. At this time, the traveling wheels 13 are stably abutted against the surface of the cable 100 under the elastic action of the compression spring 39. And when the telescopic shaft 32 is telescopically adjusted to change the distance between the traveling wheels 13 and the driving shaft, the distance between the driving wheel 34 and the driven wheel 36 changes accordingly. At this time, the tensioning unit adjusts the tightness of the transmission belt 35, so that the transmission belt 35 is always in a taut transmission state. Then, when the driving shaft rotates, the driving shaft drives the traveling wheels 13 to rotate and move forward on the surface of the cable 100 through the transmission of the driving wheel 34, the transmission belt 35 and the driven wheel 36, so as to drive the mobile trolley 1 to move along the cable 100.

[0051] Furthermore, the tensioning unit includes a positioning ring 311 which is fixedly installed on the outer circumference of the bottom end of the main shaft 31. A positioning rod 312 is fixedly installed at the bottom end of the positioning ring 311. A sliding plate 314 is slidably installed inside the positioning rod 312 through a chute. A tensioning spring 313 is abutted and installed at the inner end of the sliding plate 314. A telescopic rod 315 is fixedly installed at the outer end of the sliding plate 314. A tensioning wheel 37 which abuts against the surface of the transmission belt 35 is rotatably installed at the outer end of the telescopic rod 315.

[0052] Among them, the tensioning wheel 37 abuts against the surface of the transmission belt 35 under the elastic action of the tensioning spring 313. When the distance between the driving wheel 34 and the driven wheel 36 decreases and the transmission belt 35 becomes loose, the tensioning wheel 37 continues to move towards the transmission belt 35 under the elastic action of the tensioning spring 313 to abut and bend the transmission belt 35, so that the transmission belt 35 maintains a taut transmission state. Correspondingly, when the distance between the driving wheel 34 and the driven wheel 36 increases, the transmission belt 35 is pulled taut and straight, and the tensioning wheel 37 moves upward and resets under the pushing action of the transmission belt 35. Thus, through the lifting movement of the tensioning wheel 37, the tightness of the transmission belt 35 can be automatically adjusted, so that the transmission belt 35 is always in a tensioned transmission state.

[0053] Embodiment 4

[0054] This embodiment discloses a detection method for a rail transit traction power supply catenary, and the specific steps are as follows:

[0055] First, after rotating and adjusting the angles of multiple substrates 11, the substrates are connected end to end through a snap component to wrap the cable 100 where the overhead catenary for rail transit traction power supply is located. At the same time, the traveling wheels 13 on the inner sides of the multiple substrates 11 are abutted against the outer surface of the cable 100 under the telescopic adjustment of the elastic telescopic component, and the multiple traveling wheels 13 are evenly distributed at equal intervals in a circle around the outer circle of the cable 100;

[0056] After that, the rotation drive component drives the drive shaft connected thereto to rotate. At the same time, the drive shaft drives other drive shafts to rotate synchronously through the movable transmission component. When the drive shaft rotates, the corresponding traveling wheels 13 are driven to rotate synchronously on the surface of the cable 100 through the telescopic transmission component. Furthermore, the rotation of the traveling wheels 13 drives the mobile trolley 1 and the cable detector 4 to move along the cable 100, and the cable detector 4 can perform power supply maintenance on the cable while moving along the cable 100.

[0057] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0058] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not elaborate on all the details, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. The embodiments selected and specifically described in this specification are to better explain the principles and practical applications of the invention, so that those skilled in the art in the relevant technical field can well understand and utilize the invention.

Claims

1. A power supply maintenance device, comprising a mobile trolley capable of traveling on a cable and a cable detector mounted on the mobile trolley for repairing the cable, characterized in that: The mobile trolley includes a plurality of base plates and buckle assemblies, each of the inner side surfaces of the base plates is rotatably mounted with a running wheel, and the plurality of base plates are rotatably connected in sequence, so that the plurality of base plates can be connected end to end through the buckle assemblies after rotation to cover the cable, and at the same time, the running wheels on the inner side surfaces of the base plates are circumferentially distributed and abut against the surface of the cable; The interior of the mobile trolley is also equipped with a travel drive mechanism for driving the travel wheels to rotate, and the travel drive mechanism includes a rotation drive assembly, a plurality of drive shafts and a plurality of movable transmission assemblies. The plurality of drive shafts are respectively rotatably mounted on the inner side surfaces of the corresponding substrates, and the adjacent drive shafts are transmission-connected via the movable transmission assembly, and the movable transmission assembly can always maintain the transmission connection between the two drive shafts when the adjacent substrates are rotated for angle adjustment. The rotation drive assembly is mounted on the inner side surface of one of the substrates and is transmission-connected to the drive shaft on the inner side surface of the substrate; The inner side of the base plate is also provided with an adjustment mechanism for connecting and installing the walking wheel, the adjustment mechanism includes an elastic telescopic component and a telescopic transmission component, the walking wheel is rotatably installed on the inner side of the base plate through the elastic telescopic component, and the telescopic transmission component is transmission-connected between the drive shaft and the walking wheel; A storage battery electrically connected to the cable detector and the rotary drive assembly is also installed inside the mobile vehicle.

2. A power supply maintenance device according to claim 1, characterized in that: The buckle assembly includes two groups of connecting buckles, and the two groups of connecting buckles are respectively fixedly installed on the outer edges of the base plate at the head and tail ends, and the two groups of connecting buckles can be locked and fixed by locking bolts.

3. A power supply maintenance device according to claim 1, characterized in that: There are three base plates, and adjacent base plates are rotatably connected via hinges; The driving shaft includes a main driving shaft and two auxiliary driving shafts. The main driving shaft is rotatably installed on the inner side surface of the middle base plate, and the two auxiliary driving shafts are rotatably installed on the inner side surfaces of the base plates on both sides respectively. The main driving shaft and the two auxiliary driving shafts are connected to the walking wheels on the corresponding base plates through a telescopic transmission assembly.

4. A power supply maintenance device according to claim 3, characterized in that: The rotary drive assembly includes a motor and a driven bevel gear. The motor is fixedly mounted on the inner side of the middle base plate. The output end of the motor is transmission-mounted with a driving bevel gear. The driven bevel gear is fixedly mounted on the main drive shaft, and the driving bevel gear is meshingly transmission-connected with the driven bevel gear.

5. A power supply maintenance device according to claim 4, characterized in that: The movable transmission assembly includes a transmission gear and a transmission shaft 1. The transmission gear is fixedly installed on the end of the main driving shaft. The transmission shaft 1 is rotatably installed on the bottom surface of the intermediate base plate and is arranged parallel to the main driving shaft. A transmission bevel gear 1 and a driven gear are fixedly installed on the transmission shaft 1. The driven gear is meshed and connected with the transmission gear.

6. A power supply maintenance device according to claim 5, characterized in that: The movable transmission assembly also includes a transmission shaft 2 and a transmission bevel gear 4. The transmission shaft 2 is rotatably mounted on the bottom surface of the intermediate base plate. One end of the transmission shaft 2 is fixedly mounted with a transmission bevel gear 2 which is meshingly connected to the transmission bevel gear 1. The other end of the transmission shaft 2 is fixedly mounted with a transmission bevel gear 3. The transmission bevel gear 4 is fixedly mounted on one end of the auxiliary drive shaft and is meshingly connected to the transmission bevel gear 3.

7. A power supply maintenance device according to claim 1, characterized in that: The elastic telescopic component includes a main shaft, a telescopic sliding hole is opened inside the main shaft, a slider is slidably installed inside the telescopic sliding hole, a pressure spring is abutted against the inner end of the slider, a telescopic shaft extending to the outside of the main shaft is fixedly installed on the outer end of the slider, a connecting plate is fixedly installed on one end of the telescopic shaft, and a walking wheel is rotatably installed on one side of the connecting plate.

8. A power supply maintenance device according to claim 7, characterized in that: The telescopic transmission assembly includes a transmission wheel, a driven wheel and a tensioning unit. The transmission wheel is fixedly mounted on the driving shaft, the driven wheel is fixedly mounted on the end of the walking wheel, the transmission wheel and the driven wheel are connected by a transmission belt, and the tensioning unit is mounted on the main shaft and can abut and tension the transmission belt.

9. A power supply maintenance device according to claim 8, characterized in that: The tensioning unit includes a positioning ring, which is fixedly mounted on the outer ring of the bottom end of the main shaft, a positioning rod is fixedly mounted on the bottom end of the positioning ring, a slide is slidably mounted inside the positioning rod through a slide groove, a tensioning spring is abutted against the inner end of the slide, a telescopic rod is fixedly mounted on the outer end of the slide, and a tensioning wheel abutting against the surface of the transmission belt is rotatably mounted on the outer end of the telescopic rod.

10. A method for detecting a rail transit traction power supply contact network, using the power supply inspection and maintenance device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: First, after rotating and adjusting the angle, multiple substrates are connected end to end through a snap assembly to cover the cable where the rail transit traction power supply contact network is located, and at the same time, the running wheels on the inner side of the multiple substrates are abutted against the outer surface of the cable under the telescopic adjustment of the elastic telescopic assembly, and the multiple running wheels are equidistantly distributed on the outer circle of the cable; Then, the driving shaft connected to it is driven to rotate through the rotating driving assembly, and at the same time, the driving shaft drives other driving shafts to rotate synchronously through the movable transmission assembly. When the driving shaft rotates, the corresponding traveling wheels are driven to rotate synchronously on the cable surface through the telescopic transmission assembly, and then the rotation of the traveling wheels drives the mobile trolley and the cable detector to move along the cable, and the cable detector can perform power supply inspection on the cable while moving along the cable.

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