Switching test device and power distribution network system

Abstract

The application discloses a switch testing device and a power distribution network system. The switch testing device comprises a device box, a testing assembly and a storage assembly. The device box comprises a box body and a cover body. The box body is arranged on a telegraph pole. The box body has a first accommodating cavity and a second accommodating cavity. A wire inlet hole for communicating with the internal space of the telegraph pole is arranged in the cavity bottom of the second accommodating cavity. The wire inlet hole is used for allowing a testing wire to pass through and enter the second accommodating cavity. The cover body is movably or detachably connected to the box body. The testing assembly comprises a tester and a testing interface. The tester and the testing interface are arranged in the first accommodating cavity. The testing interface is electrically connected to the tester. The testing interface is used for being electrically connected to a testing connector of the testing wire. The storage assembly is arranged in the second accommodating cavity. The storage assembly comprises a rotating shaft and a winding drum. The rotating shaft is fixedly connected to the box body. The winding drum is rotatably sleeved on the rotating shaft. The winding drum is used for winding the testing wire. Therefore, the testing operation can be simplified, and the working strength of maintenance personnel is reduced.

Description

Technical Field

[0001] This invention relates to the field of power distribution network technology, and in particular to a switch testing device and a power distribution network system. Background Technology

[0002] In a power distribution network system, there are usually switchgear devices installed on utility poles for overhead power distribution lines. The maintenance of a power distribution network system includes testing the switchgear devices to check their working status.

[0003] In related technologies, maintenance personnel typically carry testing instruments to the utility pole and retrieve the test wires that run through the switchgear inside the pole, connecting them one by one to the testing instruments to test the switchgear. This testing process is complex, and maintenance personnel need to carry heavy instruments outdoors, resulting in a high workload. Summary of the Invention

[0004] One objective of this invention is to provide a switch testing device that simplifies testing operations and reduces the workload of maintenance personnel.

[0005] Another objective of this invention is to provide a power distribution network system that reduces maintenance difficulty by using the aforementioned switch testing device.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, a switch testing device is provided, comprising:

[0008] The device box includes a box body and a cover. The box body is used to be mounted on a utility pole. The box body has a first receiving cavity and a second receiving cavity, and an opening on one side of the box body. Both the first receiving cavity and the second receiving cavity are connected to the opening. The bottom of the second receiving cavity has an inlet hole for connecting to the internal space of the utility pole. The inlet hole is used for a test wire to pass through and enter the second receiving cavity. The cover is movable or detachably connected to the box body, and the cover can cover the opening or expose the opening.

[0009] A testing component, comprising a tester and a test interface, both disposed within the first receiving cavity, the test interface being electrically connected to the tester, and the test interface being used for electrical connection to a test connector of the test wire; and...

[0010] A storage assembly is disposed in the second receiving cavity. The storage assembly includes a rotating shaft and a winding drum. The rotating shaft is fixedly connected to the housing, and the winding drum is rotatably sleeved on the rotating shaft. The winding drum is used to wind up the test wire.

[0011] As a preferred technical solution of the switch testing device, the storage component further includes a component enclosure wall, which is disposed at the bottom of the second accommodating cavity around the corresponding inlet hole, and the two opposite ends of the component enclosure wall are spaced apart. One side of the component enclosure wall is also provided with an outlet hole. The rotating shaft is located in the internal space of the component enclosure wall, and the winding drum is located between the two opposite ends of the component enclosure wall.

[0012] As a preferred technical solution of the switch testing device, the switch testing device further includes a wire pressing assembly, which is disposed in the internal space of the component enclosure corresponding to the storage assembly. The wire pressing assembly includes a limiting cylinder, a first elastic element, a first abutment, two clamping arms, and a linkage. The limiting cylinder is disposed in the component enclosure and is located on a different side from the wire outlet. The length of the limiting cylinder extends radially along the rotating shaft. The first elastic element is disposed inside the limiting cylinder. One end of the first abutment is slidably connected to the inner wall of the limiting cylinder, and the other end of the first abutment is located between the limiting cylinder and the winding cylinder. One end of each of the two clamping arms is respectively connected to two opposite sides of the limiting cylinder along a predetermined direction. A second abutment is connected to the end of each clamping arm away from the limiting cylinder. The linkage is connected between the end of the clamping arm away from the limiting cylinder and the first abutment. The linkage can rotate relative to both the clamping arm and the first abutment.

[0013] The predetermined direction is perpendicular to the length direction of the limiting cylinder and parallel to the bottom surface of the second receiving cavity.

[0014] As a preferred technical solution of the switch testing device, the switch testing device further includes a tensioning component, which is disposed in the internal space of the component enclosure corresponding to the housing component. The tensioning component includes a transmission arm, a roller, a support structure, and a second elastic element. One end of the transmission arm is hinged to the component enclosure and located on the outer periphery of the outlet hole. The other end of the transmission arm is rotatably connected to the roller. The outer periphery of the roller is provided with a limiting groove for accommodating the test wire. The support structure is disposed in the component enclosure and located on the side of the transmission arm away from the outlet hole. The second elastic element is connected between the support structure and the transmission arm. The second elastic element can apply an elastic force to the transmission arm, so that the roller always tends to approach the outlet hole.

[0015] As a preferred technical solution of the switch testing device, the switch testing device includes a plurality of the storage components, and the bottom of the second receiving cavity is provided with a plurality of the inlet holes corresponding to each of the storage components.

[0016] As a preferred technical solution of the switch testing device, the box body is further provided with a partition, which separates the first receiving cavity from the second receiving cavity. On the side of the partition away from the bottom of the box body, there are multiple wire-clamping structures. The multiple wire-clamping structures are arranged at intervals along the edges of the first receiving cavity and the second receiving cavity. Each wire-clamping structure includes two oppositely arranged fasteners. One end of each fastener is hinged to the partition, and the other end of each fastener is provided with a magnetic attracting element. The magnetic attracting elements of the two fasteners can be magnetically connected to each other.

[0017] As a preferred technical solution of the switch testing device, the testing component further includes a docking base and a connector base. The docking base is disposed in the first receiving cavity and has a mounting surface facing away from the bottom of the first receiving cavity. The test interface is disposed on the mounting surface. A pressure-sensitive element is also provided on the mounting surface around the test interface. An indicator light is also provided on the outer periphery of the docking base, and the indicator light is electrically connected to the pressure-sensitive element.

[0018] The docking base is rotatably provided with a screw and a guide rod fixedly provided on one side of the setting surface. The screw and the guide rod are spaced around the outer periphery of the connector seat. The outer periphery of the connector seat is provided with a threaded sleeve and a sliding sleeve. The threaded sleeve is threadedly connected to the screw, and the sliding sleeve is slidably connected to the guide rod.

[0019] The test connector includes a connected plug portion and a main body portion. The diameter of the main body portion is larger than the diameter of the plug portion. A stepped surface is formed at the connection between the main body portion and the plug portion. A card is provided on the outer periphery of the plug portion, spaced apart from the stepped surface. The connector seat is provided with a plug hole and a clearance hole communicating with the plug hole. The plug hole is used for the plug portion to be inserted, and the clearance hole is used for the card to pass through, so that the card and the stepped surface can respectively abut against the opposite sides of the connector seat. The connector seat can abut against the pressure-sensitive element.

[0020] As a preferred technical solution of the switch testing device, the connector seat is further provided with an elastic pad, the elastic pad surrounds the socket, and the elastic pad is used to abut against the stepped surface.

[0021] As a preferred technical solution of the switch testing device, the docking base is provided with a plurality of screws, which are connected to each other so that the plurality of screws can rotate synchronously, and the outer periphery of the connector is provided with a plurality of threaded sleeves.

[0022] In a second aspect, a power distribution network system is provided, comprising: a utility pole, a switchgear, a test wire, a test connector, and a switch testing device as described in the first aspect above. The switchgear and the switch testing device are spaced apart on the utility pole. The utility pole has a through hole communicating with the inlet hole of the switch testing device. One end of the test wire is electrically connected to the switchgear, and the test wire runs along the interior of the utility pole to pass through the through hole and the inlet hole and is wound up by the winding drum. The other end of the test wire is connected to the test connector.

[0023] The beneficial effects of this invention are as follows:

[0024] By mounting the switch testing device on the utility pole through a housing, maintenance personnel can test the switchgear without needing to carry their own equipment. The test wire enters the second receiving cavity from inside the utility pole through the inlet hole, allowing for winding up the wire using a reel. The housing stores part of the test wire and test connectors. Therefore, when testing the switchgear is required, simply opening the cover allows for unwinding the test wire, connecting the test connector to the test interface, and then using the testing instrument to test the switchgear. This testing operation is simple. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] Figure 1 This is a schematic diagram of the switch testing device described in the embodiment (with the cover open relative to the box).

[0027] Figure 2 This is a three-dimensional structural diagram of the switch testing device described in the embodiment (the structure inside the first receiving cavity is omitted, and the test wire and wire connector are shown).

[0028] Figure 3 for Figure 2 Enlarged schematic diagram of point M in the middle.

[0029] Figure 4 This is a structural schematic diagram of the storage component, pressure wire component, and tensioning component (sectional view of the limiting cylinder) described in the embodiment.

[0030] Figure 5 This is a three-dimensional structural diagram of the storage component, pressure wire component, and tensioning component described in the embodiment.

[0031] Figure 6 This is a three-dimensional structural diagram of the docking base, connector, test wire, and wire connector described in the embodiment.

[0032] Figure 7This is a three-dimensional structural diagram of the docking base and the connector connecting seat described in the embodiment.

[0033] Figure 8 This is a three-dimensional structural diagram of the connector base, test wire, and wire connector described in the embodiment.

[0034] Figure 9 This is a schematic diagram of the power distribution network system described in the embodiment.

[0035] In the picture:

[0036] 100. Switch testing device;

[0037] 1. Device box; 11. Box body; 111. First receiving cavity; 112. Second receiving cavity; 113. Opening; 114. Cable inlet; 12. Cover; 13. Partition; 131. Cable clamping structure; 1310. Fastener; 1311. Magnetic suction element;

[0038] 2. Test components; 21. Tester; 22. Test interface; 23. Docking base; 231. Setting surface; 232. Pressure-sensitive element; 233. Indicator light; 234. Screw; 235. Guide rod; 24. Connector seat; 241. Threaded sleeve; 242. Sliding sleeve; 243. Insertion hole; 244. Clearance hole; 245. Elastic pad;

[0039] 3. Storage components; 31. Spindle; 32. Winding drum; 33. Component enclosure; 331. Cable exit hole;

[0040] 4. Wire pressing assembly; 41. Limiting cylinder; 42. First elastic element; 43. First abutting element; 44. Clamping arm; 45. Linkage element; 46. Second abutting element;

[0041] 5. Tensioning assembly; 51. Transmission arm; 52. Roller; 521. Limiting groove; 53. Support structure; 54. Second elastic element;

[0042] 200. Test the wires;

[0043] 300, Test connector; 3001, Insertion part; 3001a, Card; 3002, Main body;

[0044] 400. Utility pole;

[0045] 500. Switchgear. Detailed Implementation

[0046] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] like Figures 1 to 3As shown, the present invention provides a switch testing device 100, including a device box 1, a testing component 2, and a storage component 3. The device box 1 includes a box body 11 and a cover 12. The box body 11 is used to be installed on a utility pole (not shown in the figure). The box body 11 has a first receiving cavity 111 and a second receiving cavity 112, and one side of the box body 11 has an opening 113. The first receiving cavity 111 and the second receiving cavity 112 are both connected to the opening 113. The bottom of the second receiving cavity 112 has an inlet hole 114 for communicating with the internal space of the utility pole. The inlet hole 114 is used for a test wire 200 to pass through and enter the second receiving cavity 112. The cover 100 is not shown in the figure. 12 is movably or detachably connected to the housing 11, and the cover 12 can cover or expose the opening 113. The test component 2 includes a tester 21 and a test interface 22. The tester 21 and the test interface 22 are both located in the first receiving cavity 111. The test interface 22 is electrically connected to the tester 21 and is used to electrically connect to the test connector 300 of the test wire 200. The storage component 3 is located in the second receiving cavity 112. The storage component 3 includes a rotating shaft 31 and a winding drum 32. The rotating shaft 31 is fixedly connected to the housing 11, and the winding drum 32 is rotatably sleeved on the rotating shaft 31. The winding drum 32 is used to wind up the test wire 200.

[0050] By mounting the switch testing device 100 on the utility pole via the housing 11, maintenance personnel can test the switchgear (not shown in the figure) without having to carry their own instruments. The test wire 200 enters the second receiving cavity 112 from inside the utility pole through the inlet hole 114, allowing the winding drum 32 to wind the test wire 200. The housing 11 stores part of the test wire 200 and the test connector 300. Therefore, when testing the switchgear is required, simply opening the cover 12 allows for unwinding the test wire 200, connecting the test connector 300 to the test interface 22, and then using the tester 21 to test the switchgear. This testing operation is simple.

[0051] The tester 21 may include, but is not limited to, any existing instrument used to test the working performance of switching devices. For example, the tester 21 may include, but is not limited to, an ammeter, a voltmeter, and a timer.

[0052] Please combine Figure 4 and Figure 5As shown, optionally, the storage component 3 also includes a component enclosure 33. The component enclosure 33 is disposed at the bottom of the second receiving cavity 112 around the corresponding inlet hole 114, and the two opposite ends of the component enclosure 33 are spaced apart. One side of the component enclosure 33 is also provided with an outlet hole 331. The rotating shaft 31 is located in the internal space of the component enclosure 33, and the winding drum 32 is located between the two opposite ends of the component enclosure 33. Thus, the component enclosure 33 can provide a certain degree of protection for the test wire 200 stored in the storage component 3, and at the same time restrict the test wire 200 from extending out of the outlet hole 331, which can avoid the test wire 200 from being messy and facilitate the test personnel to operate the test connector 300 at the end of the test wire 200.

[0053] Optionally, the switch testing device 100 further includes a wire pressing assembly 4, which is disposed in the internal space of the component enclosure 33 corresponding to the housing assembly 3. The wire pressing assembly 4 includes a limiting cylinder 41, a first elastic element 42, a first abutting element 43, two clamping arms 44, and a linkage element 45. The limiting cylinder 41 is disposed in the component enclosure 33 and is located on a different side from the wire outlet 331. The length of the limiting cylinder 41 extends radially along the rotating shaft 31. The limiting cylinder 41 is provided with a first elastic element 42. One end of the first abutting element 43 is slidably connected to the inner wall of the limiting cylinder 41. The other end of the abutment 43 is located between the limiting cylinder 41 and the winding cylinder 32. One end of each of the two clamping arms 44 is connected to two opposite sides of the limiting cylinder 41 along a predetermined direction. The end of each clamping arm 44 away from the limiting cylinder 41 is connected to a second abutment 46. The linkage 45 is connected between the end of the clamping arm 44 away from the limiting cylinder 41 and the first abutment 43. The linkage 45 can rotate relative to both the clamping arm 44 and the first abutment 43. The predetermined direction is perpendicular to the length direction of the limiting cylinder 41 and parallel to the bottom surface of the second receiving cavity 112.

[0054] Therefore, when there are fewer test wires 200 wound on the take-up drum 32, the first abutment 43 can abut against the test wire 200, so that the first elastic member 42 can apply an elastic clamping force to the test wire 200 through the first abutment 43 to limit the test wire 200, so that the test wire 200 can be kept in the posture of being wound on the take-up drum 32, and the take-up drum 32 is less likely to rotate on its own and cause the test wire 200 to be released.

[0055] When there are many test wires 200 wound on the take-up drum 32, the test wires 200 press against the first abutment 43, causing the first elastic member 42 to compress. One end of the linkage member 45 follows the first abutment 43 and approaches the limiting cylinder 41. The ends of the two clamping arms 44 away from the limiting cylinder 41 approach each other under the action of the linkage member 45 until the second abutment 46 also abuts against the test wires 200, so as to further restrict the posture of the test wires 200 being wound on the take-up drum 32, and can limit the total length of the test wires 200 wound on the take-up drum 32.

[0056] Optionally, the end face of the first abutting member 43 that abuts against the test wire 200 may be an arc surface, so that the effective contact area between the first abutting member 43 and the test wire 200 is larger, thereby improving the limiting effect of the first abutting member 43 on the test wire 200.

[0057] Optionally, the linkage 45 can be a flexible rope structure or a rod-shaped structure with both ends hinged to the clamping arm 44 and the first abutment 43 respectively, so as to realize the function of linking the end of the clamping arm 44 away from the limiting cylinder 41 with the first abutment 43.

[0058] Optionally, the second abutment 46 may be made of rubber or silicone, so that when the second abutment 46 abuts against the test wire 200, the friction between the second abutment 46 and the test wire 200 is large, which can make the second abutment 46 have a better limiting effect on the test wire 200.

[0059] Optionally, the switch testing device 100 further includes a tensioning component 5, which is disposed in the internal space of the component enclosure 33 corresponding to the housing component 3. The tensioning component 5 includes a transmission arm 51, a roller 52, a support structure 53, and a second elastic element 54. One end of the transmission arm 51 is hinged to the component enclosure 33 and located on the outer periphery of the wire outlet hole 331. The other end of the transmission arm 51 is rotatably connected to the roller 52. The outer periphery of the roller 52 is provided with a limiting groove 521 for accommodating the test wire 200. The support structure 53 is disposed in the component enclosure 33 and located on the inner space of the component enclosure 33. Arm 51 is located on the side opposite to the outlet hole 331. The second elastic element 54 is connected between the support structure 53 and the transmission arm 51. The second elastic element 54 can apply an elastic force to the transmission arm 51, so that the roller 52 always tends to be close to the outlet hole 331. This allows the groove wall of the limiting groove 521 to abut against the part of the test wire 200 that extends out of the outlet hole 331. The second elastic element 54 applies an elastic force to the test wire 200 through the roller 52 to automatically adjust the tension of the test wire 200 and prevent the test wire 200 from being too loose and getting tangled.

[0060] Optionally, the switch testing device 100 includes multiple storage components 3, and the bottom of the second receiving cavity 112 is provided with multiple wire inlet holes 114 corresponding to each storage component 3, so that different test wires 200 can be wound and stored separately, making it easier for testers to distinguish different test wires 200.

[0061] Optionally, the box body 11 is further provided with a partition 13, which separates the first receiving cavity 111 from the second receiving cavity 112. On the side of the partition 13 away from the bottom of the box body 11, there are multiple wire-clamping structures 131. The multiple wire-clamping structures 131 are arranged at intervals along the edges of the first receiving cavity 111 and the second receiving cavity 112. The wire-clamping structure 131 includes two oppositely arranged fasteners 1310. One end of the fastener 1310 is hinged to the partition 13, and the other end of the fastener 1310 is provided with a magnetic attractor 1311. The two magnetic attractors 1311 on the two fasteners 1310 can be magnetically connected to each other, so that the test wires 200 can be further distinguished and limited by the wire-clamping structure 131. In addition, the position of the end of the test wire 200 connected to the test connector 300 can be limited, so as to facilitate the tester to distinguish and use different test wires 200.

[0062] Please refer to section 6 to... Figure 8As shown, optionally, the test assembly 2 further includes a docking base 23 and a connector connector 24. The docking base 23 is disposed in the first receiving cavity 111, and the docking base 23 has a mounting surface 231 facing away from the bottom of the first receiving cavity 111. The test interface 22 is disposed on the mounting surface 231, and a pressure-sensitive element 232 located on the outer periphery of the test interface 22 is also provided on the mounting surface 231. An indicator light 233 is also provided on the outer periphery of the docking base 23, and the indicator light 233 is electrically connected to the pressure-sensitive element 232. The test connector 300 includes a connected insertion part 3001 and a main body part 3002. The main body part 3002... The diameter is larger than that of the plug-in part 3001. The connection between the main body part 3002 and the plug-in part 3001 forms a stepped surface (not shown in the figure). The outer periphery of the plug-in part 3001 is provided with a card 3001a spaced apart from the stepped surface. The connector seat 24 is provided with a plug hole 243 and a clearance hole 244 communicating with the plug hole 243. The plug hole 243 is used for the plug-in part 3001 to be inserted, and the clearance hole 244 is used for the card 3001a to pass through, so that the card 3001a and the stepped surface can respectively abut against the opposite sides of the connector seat 24. The connector seat 24 can abut against the pressure-sensitive element 232. Specifically, the tester can pass the plug portion 3001 through the socket 243 and the card 3001a through the clearance hole 244, and then rotate the test connector 300 to offset the card 3001a from the clearance hole 244. This allows the card 3001a and the stepped surface to abut against the connector seat 24, thus restricting the posture of the test connector 300. Then, after the test connector 300 is properly connected to the test interface 22, the connector seat 24 located on the outer periphery of the plug portion 3001 abuts against the pressure-sensitive element 232, causing the pressure-sensitive element 232 to generate current and illuminate the indicator light 233. This allows the operator to confirm whether the test connector 300 and the test interface 22 are properly connected by observing the status of the indicator light 233.

[0063] Optionally, the connector 24 is further provided with an elastic pad 245, which surrounds the insertion hole 243 and is used to abut against the stepped surface.

[0064] Optionally, a screw 234 and a guide rod 235 may be rotatably provided on one side of the mounting surface 231 of the docking base 23. The screw 234 and the guide rod 235 are spaced around the outer periphery of the connector 24. A threaded sleeve 241 and a sliding sleeve 242 are spaced around the outer periphery of the connector 24. The threaded sleeve 241 is threadedly connected to the screw 234, and the sliding sleeve 242 is slidably connected to the guide rod 235. Thus, the tester can rotate the screw 234 to drive the connector 24 to move against the guide rod. The test connector 300 is positioned closer to or further away from the docking base 23. This allows for better controllability of the insertion and removal process between the test connector 300 and the test interface 22, effectively preventing damage to the test connector 300 and test interface 22 during insertion and removal due to incorrect insertion or removal direction. On the other hand, it helps maintain the current relative position between the connector 24 and the docking base 23, thereby helping to maintain a more stable insertion relationship between the test connector 300 and the test interface 22 during the test.

[0065] Optionally, the docking base 23 is provided with multiple screws 234, and the outer periphery of the connector 24 is provided with multiple threaded sleeves 241. In this way, when the relative position of the connector 24 and the docking base 23 is adjusted by rotating the screws 234, the stress points of the connector 24 can be increased, thereby improving the stress balance and rationality of the connector 24 and helping to reduce the possibility of the connector 24 getting stuck with the screws 234 and the guide rods 235 during the adjustment process.

[0066] Optionally, the multiple screws 234 can be connected by means of transmission including but not limited to gear transmission and pulley transmission, so that the multiple screws 234 can rotate synchronously. Thus, the operator can achieve the synchronous rotation of multiple screws 234 by rotating only one screw 234. This facilitates the operation of the operator and makes the synchronous rotation of multiple screws 234 more reasonable and balanced in adjusting the position of the connector seat 24.

[0067] Optionally, the docking base 23 may also be provided with multiple guide rods 235, and the outer periphery of the connector 24 may be provided with multiple sliding sleeves 242. By increasing the number of guide rods 235 and sliding sleeves 242, the force balance of the connector 24 can be improved, thereby further improving the smoothness of the process of adjusting the position of the connector 24 by the screw 234.

[0068] like Figure 9 As shown, the present invention also provides a power distribution network system. Please refer to the following: Figure 1 and Figure 4As shown, the power distribution network system includes: a utility pole 400, a switchgear 500, a test wire 200, a test connector 300, and a switch testing device 100 as described in the aforementioned technical solution. The switchgear 500 and the switch testing device 100 are spaced apart on the utility pole 400. The utility pole 400 has a through hole that connects to the inlet hole 114 of the switch testing device 100. One end of the test wire 200 is electrically connected to the switchgear 500, and the test wire 200 runs along the inside of the utility pole 400 to pass through the through hole and the inlet hole 114 and is wound up by the winding drum 32. The other end of the test wire 200 is connected to the test connector 300. By using the aforementioned switch testing device 100, the operational difficulty of testing the switchgear 500 can be reduced, thereby reducing the maintenance difficulty.

[0069] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0070] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0072] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A switch testing device, characterized in that, include: The device box includes a box body and a cover. The box body is used to be mounted on a utility pole. The box body has a first receiving cavity and a second receiving cavity, and an opening on one side of the box body. Both the first receiving cavity and the second receiving cavity are connected to the opening. The bottom of the second receiving cavity has an inlet hole for connecting to the internal space of the utility pole. The inlet hole is used for a test wire to pass through and enter the second receiving cavity. The cover is movable or detachably connected to the box body, and the cover can cover the opening or expose the opening. The test component includes a tester and a test interface, both of which are located in the first receiving cavity. The test interface is electrically connected to the tester and is used to electrically connect to the test connector of the test wire. as well as, A storage assembly is disposed in the second receiving cavity. The storage assembly includes a rotating shaft and a winding drum. The rotating shaft is fixedly connected to the box body, and the winding drum is rotatably sleeved on the rotating shaft. The winding drum is used to wind up the test wire. The storage component also includes a component enclosure wall, which is disposed at the bottom of the second receiving cavity around the corresponding inlet hole, and the two opposite ends of the component enclosure wall are spaced apart. One side of the component enclosure wall is also provided with an outlet hole. The rotating shaft is located in the internal space of the component enclosure wall, and the winding drum is located between the two opposite ends of the component enclosure wall. The switch testing device further includes a wire pressing assembly, which is disposed in the internal space of the component enclosure corresponding to the storage assembly. The wire pressing assembly includes a limiting cylinder, a first elastic element, a first abutment, two clamping arms, and a linkage. The limiting cylinder is disposed in the component enclosure and is located on a different side from the wire outlet. The length of the limiting cylinder extends radially along the rotating shaft. The first elastic element is disposed inside the limiting cylinder. One end of the first abutment is slidably connected to the inner wall of the limiting cylinder. The other end of the first abutment is located between the limiting cylinder and the winding cylinder. One end of each of the two clamping arms is respectively connected to two opposite sides of the limiting cylinder along a predetermined direction. A second abutment is connected to the end of each clamping arm away from the limiting cylinder. The linkage is connected between the end of the clamping arm away from the limiting cylinder and the first abutment. The linkage is rotatable relative to both the clamping arm and the first abutment. The predetermined direction is perpendicular to the length direction of the limiting cylinder and parallel to the bottom surface of the second receiving cavity.

2. The switch testing device according to claim 1, characterized in that, The switch testing device further includes a tensioning component, which is disposed in the internal space of the component enclosure corresponding to the storage component. The tensioning component includes a transmission arm, a roller, a support structure, and a second elastic element. One end of the transmission arm is hinged to the component enclosure and located on the outer periphery of the outlet hole. The other end of the transmission arm is rotatably connected to the roller. The outer periphery of the roller is provided with a limiting groove for accommodating the test wire. The support structure is disposed in the component enclosure and located on the side of the transmission arm away from the outlet hole. The second elastic element is connected between the support structure and the transmission arm. The second elastic element can apply an elastic force to the transmission arm, so that the roller always tends to approach the outlet hole.

3. The switch testing device according to any one of claims 1-2, characterized in that, The switch testing device includes multiple storage components, and the bottom of the second receiving cavity is provided with multiple inlet holes corresponding to each storage component.

4. The switch testing device according to any one of claims 1-2, characterized in that, The box body is also provided with a partition, which separates the first receiving cavity from the second receiving cavity. On the side of the partition away from the bottom of the box body, there are multiple wire-locking structures. The multiple wire-locking structures are arranged at intervals along the edges of the first receiving cavity and the second receiving cavity. Each wire-locking structure includes two oppositely arranged fasteners. One end of each fastener is hinged to the partition, and the other end of each fastener is provided with a magnetic attracting element. The magnetic attracting elements of the two fasteners can be magnetically connected to each other.

5. The switch testing device according to any one of claims 1-2, characterized in that, The test assembly further includes a docking base and a connector base. The docking base is disposed in the first receiving cavity and has a mounting surface facing away from the bottom of the first receiving cavity. The test interface is disposed on the mounting surface. A pressure-sensitive element is also disposed on the mounting surface around the test interface. An indicator light is also disposed on the outer periphery of the docking base and is electrically connected to the pressure-sensitive element. A screw and a guide rod are rotatably provided on one side of the setting surface of the docking base. The screw and the guide rod are spaced around the outer periphery of the connector seat. A threaded sleeve and a sliding sleeve are spaced around the outer periphery of the connector seat. The threaded sleeve is threadedly connected to the screw, and the sliding sleeve is slidably connected to the guide rod. The test connector includes a connected plug portion and a main body portion. The diameter of the main body portion is larger than the diameter of the plug portion. A stepped surface is formed at the connection between the main body portion and the plug portion. A card is provided on the outer periphery of the plug portion, spaced apart from the stepped surface. The connector seat is provided with a plug hole and a clearance hole communicating with the plug hole. The plug hole is used for the plug portion to be inserted, and the clearance hole is used for the card to pass through, so that the card and the stepped surface can respectively abut against the opposite sides of the connector seat. The connector seat can abut against the pressure-sensitive element.

6. The switch testing device according to claim 5, characterized in that, The connector seat is also provided with an elastic pad, which surrounds the insertion hole and is used to abut against the stepped surface.

7. The switch testing device according to claim 5, characterized in that, The docking base is provided with a plurality of screws, which are connected to each other so that they can rotate synchronously. The outer periphery of the connector is provided with a plurality of threaded sleeves.

8. A power distribution network system, characterized in that, include: The utility pole, switchgear, test wire, test connector, and switch testing device as described in any one of claims 1-7, wherein the switchgear and the switch testing device are spaced apart on the utility pole, the utility pole has a through hole communicating with the inlet hole of the switch testing device, one end of the test wire is electrically connected to the switchgear, and the test wire runs along the interior of the utility pole to pass through the through hole and the inlet hole and is wound up by the winding drum, and the other end of the test wire is connected to the test connector.

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