A line selection device for ground system failure

Abstract

This utility model discloses a fault location device for grounding systems, comprising: a support, a detection mechanism, and a conveying mechanism, wherein the detection mechanism and the conveying mechanism are respectively mounted on the support; the conveying mechanism includes: a first roller rotatably connected to the support; a second roller rotatably connected to the support and spaced apart from the first roller, the distance between the second roller and the first roller being adjustable; and a drive assembly mounted on the support and connected to the first roller and / or the second roller. Without the clamping of the second roller and the first roller, the operator pulls the cable back and forth with less effort, thereby reducing labor intensity, minimizing wear and damage to the cable during detection, ensuring cable integrity, and thus improving cable lifespan.

Description

Technical Field

[0001] This utility model relates to the field of fault location technology, and in particular to a fault location device for grounding systems. Background Technology

[0002] The fault location device used in the event of a grounding system fault is typically designed to ensure that the electrical system can still operate safely and to reduce damage and danger.

[0003] Patent publication number CN219245694U relates to a fault location device for a low-current grounding system, including a location box with a location mechanism installed inside. The device allows the cable to be tested to be threaded through a current transformer on a support base, and then through a distribution plate on a drive shaft and guide shaft for straightening, preventing the cables from becoming tangled. A drive motor is then activated, rotating the drive shaft. Through meshing limit gears, the guide shaft at the upper end of the drive shaft rotates in the opposite direction. The drive shaft, guide shaft, and distribution plate work together to guide and transport the passing cable. When a cable fault is detected, the current transformer sends a signal to the PLC terminal of the control box, triggering an alarm on the buzzer inside the control box. Workers can then manually pull on a single cable repeatedly to pinpoint the fault location, facilitating cable location and improving work efficiency.

[0004] The aforementioned patent has the function of detecting the conveying cable. It guides and conveys the passing cable by cooperating with the drive shaft, guide shaft and branch plate. However, when a fault is detected, the worker repeatedly pulls the cable to determine the fault node. Directly pulling the cable will cause friction between the cable surface and the drive shaft and guide shaft, resulting in wear and damage to the cable, thereby reducing the cable life and causing the cable core to be exposed or broken, further increasing the maintenance cost and time. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fault location device for grounding systems.

[0006] The technical solution adopted by this utility model to solve its technical problem is: to construct a fault selection device for a grounding system, including: a bracket, a detection mechanism and a conveying mechanism, wherein the detection mechanism and the conveying mechanism are respectively installed on the bracket;

[0007] The conveying mechanism includes: a first roller rotatably connected to the bracket; a second roller rotatably connected to the bracket and spaced apart from the first roller, wherein the distance between the second roller and the first roller is adjustable; and a drive assembly mounted on the bracket and connected to the first roller and / or the second roller.

[0008] Furthermore, the second roller is capable of moving back and forth relative to the first roller between a first position close to the first roller and a second position far from the first roller; the grounding system fault selection device also includes a limiting component disposed between the second roller and the support, for operably limiting the second roller to the first position or the second position.

[0009] Furthermore, the second roller includes a second roller shaft and a second roller cylinder, the second roller shaft being slidably connected to the bracket, and the second roller cylinder being rotatably connected to the second roller shaft.

[0010] Furthermore, the limiting component includes: an insertion rod, a limiting block, a first spring, and a limiting groove. The insertion rod is symmetrically inserted into both ends of the second roller shaft, the limiting block is symmetrically installed on the insertion rod, the first spring is disposed between the insertion rod and the limiting block, the limiting groove is disposed on the bracket, and the limiting block is slidably disposed within the limiting groove.

[0011] Furthermore, the drive assembly includes a first gear, a second gear, and a motor. The first gear is mounted on the first roller, the second gear is mounted on the second roller, and the first gear meshes with the second gear for transmission. The motor is mounted on a bracket and connected to the first roller.

[0012] Furthermore, the detection mechanism includes a control component and a current transformer. The control component is mounted on the bracket, the current transformer is mounted on the bracket, and both the current transformer and the motor are electrically connected to the control component.

[0013] Furthermore, the fault location device for the grounding system also includes a portal groove mounted on a bracket, and a protective mechanism slidably connected within the portal groove. The protective mechanism includes a hollow tube, a support member, a second spring, and a carrier member. The hollow tube is installed within the portal groove, the support member is slidably connected within the hollow tube, the second spring is disposed between the support member and the hollow tube, the carrier member is mounted on the support member, and the carrier member is in contact with the second roller shaft. The carrier member has an arc groove for placing the second roller shaft.

[0014] Furthermore, the protective mechanism also includes a friction block and a first spring sheet. The friction block is slidably connected to the support member, the first spring sheet is installed between the friction block and the support member, the friction block is in contact with the inside of the gate-shaped groove, and the friction block is provided with a corrugated pattern.

[0015] Furthermore, the fault location device for the grounding system also includes an auxiliary component disposed within the gate-shaped groove, and a pressing block disposed on the support member. The auxiliary component includes a support frame, a third spring, a toggle member, a second spring, and a blocking member. The support frame is installed within the gate-shaped groove, one end of the third spring is installed on the support frame, the toggle member is installed on the other end of the third spring, the second spring is installed on the toggle member, and multiple blocking members are installed within the support frame. The pressing block is in contact with the toggle member.

[0016] Furthermore, the second spring is arc-shaped, and an L-shaped plate is mounted on the actuating member, the L-shaped plate being in contact with the second spring.

[0017] The following are the beneficial effects of implementing this utility model:

[0018] This application utilizes a conveying mechanism comprising: a first roller rotatably connected to the support; a second roller rotatably connected to the support and spaced apart from the first roller, with the distance between the second roller and the first roller being adjustable; and a drive assembly mounted on the support and connected to the first roller and / or the second roller. By lifting the second roller upwards or moving the first roller downwards on the support, the operator moves the second roller away from the first roller, thus preventing the second roller and the first roller from clamping the cable. The operator then locks the second roller or the first roller at the upper or lower part of the support, keeping them separated. The operator then holds the cable and repeatedly pulls it through the detection mechanism to locate the specific damage point. Without the clamping of the second and first rollers, the operator pulls the cable back and forth with less effort, reducing labor intensity, minimizing wear and damage to the cable during detection, ensuring cable integrity, and thus improving cable lifespan. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] In the attached image:

[0021] Figure 1 This is a schematic diagram of the structure of a fault location device for a grounding system in some embodiments of this utility model;

[0022] Figure 2 This is a schematic diagram of the conveying mechanism and drive assembly of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the limiting component of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first and second rollers of this utility model;

[0025] Figure 5 This is a utility model Figure 4 Enlarged view of part A in the image;

[0026] Figure 6 This is a schematic diagram of the protective mechanism of this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the auxiliary component of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the second spring and the blocking component of this utility model.

[0029] Explanation of markings in the diagram

[0030] 1. Support bracket, 2. Detection mechanism, 21. Control component, 22. Current transformer, 3. Conveying mechanism, 31. First roller, 30. Second roller shaft, 32. Second roller, 33. Limiting component, 35. Insert rod, 351. Limiting block, 352. First spring, 353. Limiting groove, 354. Drive component, 36. First gear, 361. Second gear, 362. Motor, 363. Gate-shaped groove, 4. Protective mechanism, 5. Hollow tube, 51. Support component, 52. Second spring, 53. Bearing component, 54. Arc groove, 55. Friction block, 56. First spring, 57. Wavy pattern, 58. Extrusion block, 59. Auxiliary component, 6. Bearing frame, 61. Third spring, 62. Actuating component, 63. Second spring, 64. Blocking component, 65. L-shaped plate, 66. Detailed Implementation

[0031] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0032] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0033] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0034] Please see Figures 1 to 4 The grounding system fault selection device in the first embodiment of this utility model includes: a support 1, a detection mechanism 2, and a conveying mechanism 3. The detection mechanism 2 and the conveying mechanism 3 are respectively mounted on the support 1. The conveying mechanism 3 includes: a first roller 31, which is rotatably connected to the support 1; a second roller 30, which is rotatably connected to the support 1 and is spaced apart from the first roller 31, and the distance between the second roller 30 and the first roller 31 is adjustable; and a driving assembly 36, which is mounted on the support 1 and connected to the first roller 31 and / or the second roller 30.

[0035] The detection mechanism 2 is used to detect whether there is damage on the surface or inside of the cable. The cable is driven by the conveying mechanism 3 to pass through the detection mechanism 2 quickly. When the damaged cable passes through the detection mechanism 2, the detection mechanism will issue an alarm. At the same time, the detection mechanism 2 will control the conveying mechanism 3 to stop running. Then, the operator can repeatedly pull this section of the cable through the detection mechanism 2 to determine the specific location of the cable damage, thereby improving the efficiency of the detection circuit and making it easier for the operator to operate.

[0036] This application utilizes a conveying mechanism 3 comprising: a first roller 31 rotatably connected to a support 1; a second roller 30 rotatably connected to the support 1 and spaced apart from the first roller 31, with the distance between the second roller 30 and the first roller 31 being adjustable; and a drive assembly 36 mounted on the support 1 and connected to the first roller 31 and / or the second roller 30. During cable inspection, one end of the cable is passed through the inspection mechanism 2 and placed between the first roller 31 and the second roller 30. The drive assembly 36 is then activated, causing the first roller 31 to rotate clockwise and the second roller 30 to rotate counterclockwise via its output end. The cable, held by the first roller 31 and the second roller 30, moves towards the rear end under their drive. This rearward-moving portion of the cable then passes the entire cable sequentially through the inspection mechanism 2. When the inspection mechanism 2 detects damage at a location on the cable, it issues an alarm, and the first roller 31 and the second roller 30 stop rotating.

[0037] The operator can lift the second roller 30 upwards or move the first roller 31 downwards on the support 1 to move the second roller 30 away from the first roller 31, thus eliminating the clamping effect of the second roller 30 and the first roller 31 on the cable. The operator can then lock the second roller 30 or the first roller 31 on the upper or lower part of the support 1 to keep the second roller 30 and the first roller 31 away from each other. The operator can then hold the cable and move it back and forth through the detection mechanism 2 to find the specific location of the cable damage. Without the clamping effect of the second roller 30 and the first roller 31, it is easier for the operator to pull the cable back and forth, thereby reducing labor intensity, reducing wear and damage to the cable during the detection process, ensuring the integrity of the cable, and thus improving the service life of the cable.

[0038] Please see Figure 4 and Figure 5 In some embodiments, the second roller 30 is movable relative to the first roller 31 between a first position close to the first roller 31 and a second position far from the first roller 31; the grounding system fault selection device also includes a limiting component 35 disposed between the second roller 30 and the support 1 for operably limiting the second roller 30 to the first position or the second position.

[0039] This application allows the second roller 30 to move back and forth between a first position close to the first roller 31 and a second position far from the first roller 31 relative to the first roller 31. The grounding system fault selection device also includes a limiting component 35, which is disposed between the second roller 30 and the support 1 to operably limit the second roller 30 to the first or second position. The operator can use the limiting component 35 to limit the second roller 30 to the second position far from the first roller 31, ensuring the second roller 30 is stably fixed to the support 1, thereby improving safety and stability. Similarly, the operator can also use the limiting component 35 to limit the second roller 30 to the first position close to the first roller 31, ensuring stable cable transport by the cooperation of the first roller 31 and the second roller 30, thus improving the stability of the entire device during operation, facilitating operation, enhancing safety, protecting the operator's life, and increasing the efficiency of cable transport.

[0040] Please see Figure 3 and Figure 4 In some embodiments, the second roller 30 includes a second roller shaft 32 and a second roller 33, the second roller shaft 32 being slidably connected to the bracket 1, and the second roller 33 being rotatably connected to the second roller shaft.

[0041] This application utilizes a second roller 30 comprising a second roller shaft 32 and a second roller 33. The second roller shaft 32 is slidably connected to the support 1, and the second roller 33 is rotatably connected to the second roller shaft 32. This allows the second roller 33 to rotate synchronously with the first roller 31, while the second roller shaft 32 can slide stably on the support 1, further improving operational stability, reducing noise generation, reducing wear on the support 1 caused by the second roller shaft 32, and thus extending the service life of the entire device.

[0042] Please see Figures 3 to 5 In some embodiments, the limiting component 35 includes: a rod 351, a limiting block 352, a first spring 353, and a limiting groove 354. The rod 351 is symmetrically inserted into both ends of the second roller shaft 32. The limiting block 352 is symmetrically installed on the rod 351. The first spring 353 is disposed between the rod 351 and the limiting block 352. The limiting groove 354 is disposed on the bracket 1. The limiting block 352 is slidably disposed in the limiting groove 354.

[0043] In this application, the insertion rods 351 are symmetrically inserted into both ends of the second roller shaft 32, the limiting blocks 352 are symmetrically installed on the insertion rods 351, the first spring 353 is disposed between the insertion rods 351 and the limiting blocks 352, the limiting groove 354 is disposed on the bracket 1, and the limiting blocks 352 are slidably disposed in the limiting groove 354. When the detection mechanism 2 detects damage to a portion of the cable, it issues an alarm. The first roller 31 and the second roller 33 stop rotating. The operator pulls the insertion rod 351 along the axis of the second roller shaft 32, causing it to overcome the spring force of the first spring 353 and move the limiting block 352 to both sides. This separates the limiting block 352 from the lower limiting groove 354, removing the mutual constraint between them. The operator then lifts the second roller shaft 32, moving it upwards and away from the first roller 31, moving it out of its first position. After the operator moves the limiting block 352 on the insertion rod 351 until it is flush with the upper limiting groove 354, the operator... When the operator releases the insertion rod 351, the elastic force generated by the first spring 353 will drive the insertion rod 351 to move towards the second roller shaft 32. The limiting block 352 slides into the upper limiting groove 354, thereby allowing the limiting block 352 and the upper limiting groove 354 to cooperate with each other to limit the second roller shaft 32, moving the second roller shaft 32 to the second position for locking. When the upper damage position of the cable is found, the insertion rod 351 is pulled to both sides in the same way, and then the limiting block 352 is placed into the lower limiting groove 354 to return the second roller shaft 32 to the first position, so that the cable inspection can continue. This ensures that the operator can adjust the position of the second roller shaft 32 only after following the standard operating procedure, which helps to improve the standardization of the operation, thereby facilitating operation and improving safety.

[0044] Please see Figures 2 to 4 In some implementations, the drive assembly 36 includes a first gear 361, a second gear 362, and a motor 363. The first gear 361 is mounted on the first roller 31, the second gear 362 is mounted on the second roller 33, and the first gear 361 and the second gear 362 mesh and drive each other. The motor 363 is mounted on the bracket 1 and connected to the first roller 31.

[0045] This application utilizes a first gear 361 mounted on a first roller 31 and a second gear 362 mounted on a second roller 33, with the first gear 361 and second gear 362 meshing for transmission. A motor 363 is mounted on a bracket 1 and connected to the first roller 31. When the motor 363 drives the first roller 31 to rotate clockwise, the first roller 31 will drive the first gear 361 to rotate together. The first gear 361, through meshing, will drive the second gear 362 to rotate counterclockwise. The second gear 362, through its fixed connection with the second roller 33, drives the second roller 33 to rotate counterclockwise on the second roller shaft 32. The counterclockwise rotating second roller 33 and the clockwise rotating first roller 31 will clamp the cable through the detection mechanism 2, thereby improving the detection efficiency. Only one power source is needed to realize the rotation of the first roller 31 and the second roller 33, improving energy utilization, reducing energy consumption, and further saving detection costs.

[0046] Please see Figure 1 and Figure 4 In some implementations, the testing mechanism 2 includes a control component 21 and a current transformer 22. The control component 21 is mounted on a bracket 1, the current transformer 22 is mounted on the bracket 1, and the current transformer 22 and the motor 363 are both electrically connected to the control component 21.

[0047] This application uses a control component 21 mounted on a bracket 1, and a current transformer 22 mounted on the bracket 1. Both the current transformer 22 and the motor 363 are electrically connected to the control component 21. The current transformer 22 is used to detect the portion of the cable that it passes through. The control component 21 will issue an alarm when the current transformer 22 detects damage to the cable. At the same time as issuing the alarm, the control component 21 will cut off the power to the motor 363, causing the motor 363 to stop running. Without the power provided by the motor 363, the first roller 31 and the second roller 33 will stop driving the cable to continue moving backward, thereby reducing the distance the damaged part of the cable moves backward. The operator can reduce the range of reciprocating cable pulling, thus finding the location of the cable damage more quickly and conveniently, reducing the labor intensity of the operator, improving detection efficiency, and also improving the safety of the operator when moving the second roller 32.

[0048] Please see Figures 3 to 8 In some implementations, the fault location device for the grounding system also includes a portal groove 4 mounted on the support 1, and a protective mechanism 5 slidably connected within the portal groove 4. The protective mechanism 5 includes a hollow tube 51, a support member 52, a second spring 53, and a carrier member 54. The hollow tube 51 is installed within the portal groove 4, the support member 52 is slidably connected within the hollow tube 51, the second spring 53 is disposed between the support member 52 and the hollow tube 51, and the carrier member 54 is mounted on the support member 52 and contacts the second roller shaft 32.

[0049] This application utilizes a portal groove 4 mounted on a support 1 and a protective mechanism 5 slidably connected within the portal groove 4. The protective mechanism 5 includes a hollow tube 51, a support member 52, a second spring 53, and a carrier member 54. The hollow tube 51 is installed within the portal groove 4, the support member 52 is slidably connected within the hollow tube 51, the second spring 53 is disposed between the support member 52 and the hollow tube 51, and the carrier member 54 is mounted on the support member 52 and contacts the second roller shaft 32. When the current transformer 22 detects damage to a portion of the cable, the operator must move the second roller 32 upwards via the insertion rod 351. As the second roller 32 moves upwards, the elastic force generated by the second spring 53 pushes the support member 52 upwards within the hollow tube 51. The support member 52 then moves the bearing member 54 upwards together, and the bearing member 54 exerts an upward force on the second roller 32. This makes it easier for the operator to move the second roller 32 upwards, and the upward elastic force generated by the second spring 53 saves the operator's physical strength, thereby reducing labor intensity.

[0050] After the operator marks the damaged location of the cable, when they want to re-inspect the cable, they need to release the restriction between the limiting block 352 and the upper limiting groove 354 to move downwards. This allows the operator to move the second roller 32 downwards. Under the action of the support member 52 and the second spring 53, the bearing member 54 will apply upward resistance to the second roller 32, allowing the operator to control the movement speed of the second roller 32 downwards. This prevents the second roller 32 from damaging the bracket 1 and the first roller 31 due to excessive downward movement, thereby improving the service life of the device and enhancing safety. It also protects the operator and makes it easier for the operator to slide the limiting block 352 into the lower limiting groove 354, further improving the inspection efficiency.

[0051] Please see Figures 5 to 7 In some implementations, the carrier 54 is provided with an arc groove 55 for placing the second roller 32.

[0052] This application provides an arc groove 55 on the support member 54 for placing the second roller shaft 32. The arc groove 55 can further restrict the movement of the second roller shaft 32, reduce the torque borne by the support 1, reduce the wear of the second roller shaft 32 on the support 1, and thus improve the service life of the entire device. When the second roller shaft 32 moves upward, the arc groove 55 can improve the stability of the second roller shaft 32 during movement, and further improve safety.

[0053] Please see Figure 6 and Figure 7In some implementations, the protective mechanism 5 also includes a friction block 56 and a first spring 57. The friction block 56 is slidably connected to the support member 54, and the first spring 57 is installed between the friction block 56 and the support member 54. The friction block 56 is in contact with the inside of the gate groove 4.

[0054] This application uses a friction block 56 slidably connected to a support member 54. A first spring 57 is installed between the friction block 56 and the support member 54. The friction block 56 is in contact with the inside of the portal groove 4. When the second roller shaft 32 moves downward, the second roller shaft 32 will cause the support member 52 to move downward through the support member 54. The downward-moving support member 52 will drive the friction block 56 to move downward together. The friction block 56 contacts the inner wall of the portal groove 4, so that the friction force generated between the friction block 56 and the portal groove 4 acts on the support member 54, further delaying the downward movement speed of the second roller shaft 32, further improving safety and the stability of the second roller shaft 32 when it moves downward. The elastic force generated by the first spring 57 can keep the friction block 56 in contact with the inner wall of the portal groove 4, so that the friction block 56 can still delay the downward movement speed of the second roller shaft 32 after multiple wears, thereby extending the service life of the entire device, helping to improve the protective effect and maintain a high level of safety for a long time.

[0055] Please see Figure 7 In some implementations, the friction block 56 is provided with a corrugated pattern 58.

[0056] This application utilizes a wavy pattern 58 on the friction block 56. The friction block 56 can be made of a material with a certain degree of elasticity, such as rubber or polyurethane, which can further increase the friction between the friction block 56 and the inner wall of the gate groove 4. The wavy pattern 58 on the friction block 56 allows the friction block 56 to make close contact with the inner wall of the gate groove 4 under the action of the first spring piece 57, thereby increasing the friction between the friction block 56 and the gate groove 4. The arc-shaped boundary allows the friction block 56 to slide smoothly within the gate groove 4 without jamming, further improving the protective effect and maintaining a high level of safety for a long time.

[0057] Please see Figure 7 and Figure 8 In some implementations, the fault location device for the grounding system also includes an auxiliary component 6 disposed in the gate slot 4 and a pressing block 59 disposed on the support member 52. The auxiliary component 6 includes: a support frame 61, a third spring 62, a toggle member 63, a second spring 64 and a blocking member 65. The support frame 61 is installed in the gate slot 4, one end of the third spring 62 is installed on the support frame 61, the toggle member 63 is installed on the other end of the third spring 62, the second spring 64 is installed on the toggle member 63, and multiple blocking members 65 are installed in the support frame 61. The pressing block 59 is in contact with the toggle member 63.

[0058] This application utilizes an auxiliary component 6 disposed within a gate-shaped groove 4 and an extrusion block 59 disposed on a support member 52. The auxiliary component 6 includes a support frame 61, a third spring 62, a toggle member 63, a second spring 64, and a blocking member 65. The support frame 61 is installed within the gate-shaped groove 4. One end of the third spring 62 is installed on the support frame 61, the toggle member 63 is installed on the other end of the third spring 62, the second spring 64 is installed on the toggle member 63, and multiple blocking members 65 are installed within the support frame 61. The extrusion block 59 is in contact with the toggle member 63.

[0059] When the operator moves the second roller 32 downwards, the support 52 moves downwards, which in turn moves the pressing block 59 downwards. The pressing block 59 comes into contact with the actuating member 63, pressing it downwards. This causes the actuating member 63 to overcome the elastic force of the third spring 62 and move the second spring 64 downwards. During its downward movement, the second spring 64 comes into contact with multiple blocking members 65 mounted on the support frame 61. The second spring 64 deforms under the obstruction of the blocking members 65. After the pressing block 59 moves the second spring 64 past one of the blocking members 65 via the actuating member 63, the second spring 64 returns to its original shape and vibrates due to its own elasticity. The vibration of the second spring 64 is transmitted to the support 52, the friction block 56, and the support 54, causing them to vibrate intermittently. This helps to improve the smoothness and accuracy of the operation, thereby improving the efficiency of the inspection.

[0060] When the operator moves the second roller 32 upward, the support 52 moves upward, which in turn moves the extrusion block 59 upward. The actuating element 63, driven by the third spring 62, moves upward along with the extrusion block 59. The upward movement of the actuating element 63 causes the second spring 64 to contact the blocking element 65. The blocking element 65 then blocks the actuating element 63 through the second spring 64. After the extrusion block 59 moves upward and separates from the actuating element 63, the elastic force generated by the third spring 62 causes the second spring 64 and the actuating element 63 to pass through the blocking element 65. After passing the blocking element 65, the actuating element 63 impacts the extrusion block 59, causing it to vibrate. This vibration is transmitted to the support 52, friction block 56, and bearing element 54, resulting in indirect vibration among these components. This improves the smoothness of overall movement, enhances operational accuracy, reduces labor intensity, and increases safety and efficiency.

[0061] Please see Figure 7 and Figure 8 In some embodiments, the second spring 64 is arc-shaped, and an L-shaped plate 66 is mounted on the actuating member 63, which contacts the second spring 64.

[0062] This application utilizes a second spring 64 that is arc-shaped, with an L-shaped plate 66 mounted on the actuating member 63, the L-shaped plate 66 contacting the second spring 64. The arc-shaped second spring 64 provides good elasticity, thereby extending its service life and maintaining the smoothness of the entire device for a longer period. The L-shaped plate 66 can block the second spring 64 when the second roller 32 moves downward, reducing the torque at the connection point between the second spring 64 and the actuating member 63, thus preventing separation of the second spring 64 and the actuating member 63 after repeated use, further extending the service life of the second spring 64 and improving the smoothness of the entire operation process.

[0063] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A line selection device for ground system fault, characterized by, include: The bracket (1), the detection mechanism (2), and the conveying mechanism (3) are respectively mounted on the bracket (1); The conveying mechanism (3) includes: The first roller (31) is rotatably connected to the bracket (1); A second roller (30) is rotatably connected to the bracket (1) and spaced apart from the first roller (31), and the distance between the second roller (30) and the first roller (31) is adjustable; and A drive assembly (36) is mounted on the bracket (1) and connected to the first roller (31) and / or the second roller (30).

2. The ground-fault line selector of claim 1, wherein The second roller (30) is capable of moving back and forth relative to the first roller (31) between a first position close to the first roller (31) and a second position away from the first roller (31); the grounding system fault selection device further includes a limiting component (35) disposed between the second roller (30) and the bracket (1) for operably limiting the second roller (30) to the first position or the second position.

3. The ground-fault line selector for ground systems according to claim 2, characterized in that, The second roller (30) includes a second roller shaft (32) and a second roller (33), the second roller shaft (32) being slidably connected to the bracket (1), and the second roller (33) being rotatably connected to the second roller shaft.

4. The ground-fault line selector of claim 3 wherein, The limiting component (35) includes: a rod (351), a limiting block (352), a first spring (353), and a limiting groove (354). The rod (351) is symmetrically inserted into both ends of the second roller shaft (32). The limiting block (352) is symmetrically installed on the rod (351). The first spring (353) is disposed between the rod (351) and the limiting block (352). The limiting groove (354) is disposed on the bracket (1). The limiting block (352) is slidably disposed in the limiting groove (354).

5. The ground-fault line selector of claim 3 wherein, The drive assembly (36) includes a first gear (361), a second gear (362), and a motor (363). The first gear (361) is mounted on the first roller (31), and the second gear (362) is mounted on the second roller (33). The first gear (361) meshes with the second gear (362) for transmission. The motor (363) is mounted on the bracket (1) and connected to the first roller (31).

6. The ground-fault line selector of claim 5 wherein, The detection mechanism (2) includes a control component (21) and a current transformer (22). The control component (21) is mounted on the bracket (1), and the current transformer (22) is mounted on the bracket (1). The current transformer (22) and the motor (363) are both electrically connected to the control component (21).

7. The ground-fault line selector of claim 3 wherein, The grounding system fault selection device also includes a gate-shaped groove (4) set on the bracket (1) and a protective mechanism (5) slidably connected in the gate-shaped groove (4). The protective mechanism (5) includes a hollow tube (51), a support member (52), a second spring (53) and a carrier member (54). The hollow tube (51) is installed in the gate-shaped groove (4). The support member (52) is slidably connected in the hollow tube (51). The second spring (53) is set between the support member (52) and the hollow tube (51). The carrier member (54) is installed on the support member (52). The carrier member (54) is in contact with the second roller shaft (32). The carrier member (54) is provided with an arc groove (55) for placing the second roller shaft (32).

8. The ground-fault line selector of claim 7 wherein, The protective mechanism (5) further includes a friction block (56) and a first spring (57). The friction block (56) is slidably connected to the support member (52). The first spring (57) is installed between the friction block (56) and the support member (52). The friction block (56) is in contact with the inside of the gate groove (4). The friction block (56) is provided with a wave pattern (58).

9. The ground fault line selection device of claim 7, wherein, The grounding system fault selection device further includes an auxiliary component (6) disposed in the gate slot (4) and a pressing block (59) disposed on the support member (52). The auxiliary component (6) includes: a support frame (61), a third spring (62), a toggle member (63), a second spring (64), and a blocking member (65). The support frame (61) is installed in the gate slot (4). One end of the third spring (62) is installed on the support frame (61). The toggle member (63) is installed on the other end of the third spring (62). The second spring (64) is installed on the toggle member (63). A plurality of the blocking members (65) are installed in the support frame (61). The pressing block (59) is in contact with the toggle member (63).

10. The ground-fault line selector of claim 9 wherein, The second spring (64) is arc-shaped, and an L-shaped plate (66) is installed on the actuating member (63), which is in contact with the second spring (64).

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