A voltage connection device

Abstract

The utility model discloses a voltage connecting device relates to electric power connection technical field, and mainly includes first conductive plate, second conductive plate and rotation fixed part, first conductive plate with second conductive plate is connected through rotation fixed part, first conductive plate can rotate relative to second conductive plate, and still be provided with soft wire between first conductive plate with second conductive plate, both ends of soft wire are connected with first conductive plate and second conductive plate respectively, and the fixed hole of first conductive plate and the fixed hole on second conductive plate are used for installing cable connecting bolt of different diameter respectively and are set up on first conductive plate and second conductive plate. The utility model discloses can be convenient for the connection of cable of different diameter, and the overall manufacturing cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of power connection technology, and in particular to a voltage connection device. Background Technology

[0002] In the testing and inspection of electrical equipment, voltage conversion devices are key auxiliary components that ensure the smooth conduct of tests. Their core function is to solve the connection and compatibility problems between different devices in the test system. In scenarios where high-voltage power supplies are connected to the equipment under test, due to factors such as differences in cable selection and different equipment design standards, mismatches often occur in the bolt diameters at both ends of the cable. For example, the bolt diameter at the output end of the high-voltage power supply may be M16, while the bolt diameter at the input end of the equipment under test may be M12. In this case, the cable cannot be directly connected to the equipment. If forced to install, it may not only lead to poor contact and discharge, but also cause physical damage to the equipment interface, and in severe cases, even cause test safety accidents.

[0003] Faced with this connection challenge, the industry's existing technical solutions generally involve remaking the cable head and integrating the existing cable to match the bolt diameter. While this solution can address the connection problem to some extent, it has significant limitations, causing numerous inconveniences and potential risks to the testing work. From an operational perspective, remaking the cable head requires multiple steps, including stripping the cable sheath, insulation treatment, conductor crimping, installing terminals, and insulation sealing. Each step demands a high level of technical skill from the operators, and the process is time-consuming. For example, making a qualified cable head for a common 10kV high-voltage cable typically takes 2-3 hours. If multiple cables need to be processed simultaneously at the testing site, it will significantly extend the test preparation time, causing the overall test cycle to be delayed. Furthermore, remaking the cable head consumes specialized insulating sleeves, sealant, terminals, and other materials, wasting resources and increasing testing costs.

[0004] Furthermore, the insulation and shielding layers of cables are crucial for their safe operation. Re-fabricating cable terminations requires stripping parts of the insulation and shielding layers, altering the cable's original electric field distribution and causing localized electric field concentration. Under high-voltage testing conditions, this can easily trigger partial discharge, or even insulation breakdown, leading to damage to testing equipment or electric shock accidents. Simultaneously, scratches on the conductor during stripping increase contact resistance, generating significant heat when current flows, potentially causing the cable joint to overheat and burn out, affecting the safety and stability of the test. Therefore, a voltage connection device is urgently needed to address these technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a voltage connection device to solve the problems existing in the prior art, which can facilitate the connection of cables of different diameters and has a low overall manufacturing cost.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a voltage connection device, including a first conductive plate, a second conductive plate, and a rotating fixing component. The first conductive plate and the second conductive plate are connected by the rotating fixing component. The first conductive plate can rotate relative to the second conductive plate. A flexible wire is also provided between the first conductive plate and the second conductive plate. The two ends of the flexible wire are respectively connected to the first conductive plate and the second conductive plate. The first conductive plate and the second conductive plate have fixing holes of different diameters. The fixing holes on the first conductive plate and the fixing holes on the second conductive plate are respectively used to install cable connecting bolts of different diameters.

[0008] In some embodiments, a first gear is also included. The rotating fixing member includes a connecting rod and at least one second gear. The end of the connecting rod is fixedly connected to the teeth of the second gear. The first gear is circumferentially rotatably fixed to the side of the first conductive plate or the second conductive plate. The first gear is meshed with the second gear. The two ends of the connecting rod are respectively connected to the first conductive plate and the second conductive plate.

[0009] In some embodiments, the rotating fixing member includes two second gears, which are respectively fixedly disposed at both ends of the connecting rod. There are two first gears, located on the side of the first conductive plate and the side of the second conductive plate, respectively.

[0010] In some embodiments, a fixing box is also included. The fixing box is open on three sides and includes a top plate, a bottom plate, and a side plate. The bottom plate is fixedly connected to the side of the first conductive plate or the second conductive plate. The two ends of the side plate are respectively vertically fixedly connected to the first end of the top plate and the first end of the bottom plate. The first gear is rotatably disposed between the top plate and the bottom plate. Both the top plate and the bottom plate are provided with arc-shaped grooves. The gear shaft of the second gear is slidably disposed in the arc-shaped grooves.

[0011] In some embodiments, the connecting rod includes a cylinder and two connecting rods. The cylinder has multiple through holes along its length, and each connecting rod has multiple slots along its length. The two connecting rods are inserted into the two ends of the cylinder, and at least one connecting rod can slide relative to the cylinder. After one of the through holes is aligned with one of the slots, a pin can be inserted.

[0012] In some embodiments, both of the links are slidable relative to the insert.

[0013] In some embodiments, the flexible wire is ring-shaped, and both the first conductive plate and the second conductive plate have first bolt holes. The two ends of the flexible wire are respectively sleeved on the first bolt of the first conductive plate and the first bolt of the second conductive plate. The first bolt can pass through the first bolt hole and be threadedly connected to the first nut.

[0014] In some embodiments, both the first conductive plate and the second conductive plate are copper plates.

[0015] In some embodiments, the flexible conductor is a copper wire, and the cross-sectional area of ​​the copper wire is not less than 120 square millimeters.

[0016] In some embodiments, the length of the first conductive plate and the second conductive plate are both 60-70mm, the width is both 45-55mm, and the thickness is not less than 5mm.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] The flexible conductor of the voltage connection device provided by this utility model ensures electrical connection between the first and second conductive plates. The first and second conductive plates have fixing holes of different diameters for installing cables of different specifications. For example, when connecting a 35kV and a 10kV cable, the fixing hole on the first conductive plate can be set to a diameter of 24mm for the 35kV cable, and the fixing hole on the second conductive plate can be set to a diameter of 12mm for the 10kV cable. For other cable specifications, different diameter fixing holes can be designed to facilitate cable installation. The rotating fixing component connects the first and second conductive plates and provides a certain degree of fixation. The first conductive plate, connected to the original cable, remains stationary, while the second conductive plate, connected to the cable to be transferred, can rotate relative to the first conductive plate as needed. The flexible conductor can be designed with a certain redundant length to ensure that it does not affect the movement of the second conductive plate relative to the first conductive plate. The design of having fixing holes of different diameters on the two conductive plates facilitates the connection of cables of different diameters and reduces overall manufacturing costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a top view of the voltage connection device in some embodiments of the present invention;

[0021] Figure 2 This is a front view of the voltage connection device in some embodiments of the present invention;

[0022] Figure 3 This is a side view of the voltage connection device in some embodiments of the present invention;

[0023] Figure 4 This is a schematic diagram of the connecting rod in some embodiments of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the fixing box in some embodiments of this utility model;

[0025] Figure 6 This is a schematic diagram showing the connection between the gear and the fixed box in some embodiments of this utility model.

[0026] In the figure: 1-First conductive plate; 2-Second conductive plate; 3-Flexible wire; 4-First bolt; 5-Connecting rod; 51-Insert cylinder; 52-Connecting rod; 6-Fixing hole; 7-First gear; 8-Second gear; 9-Base plate; 10-Arc groove; 11-Top plate; 12-Side plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The purpose of this invention is to provide a voltage connection device to solve the problems existing in the prior art, which can facilitate the connection of cables of different diameters and has a low overall manufacturing cost.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-6As shown, this utility model provides a voltage connection device, including a first conductive plate 1, a second conductive plate 2, and a rotating fixing component. The first conductive plate 1 and the second conductive plate 2 are connected by the rotating fixing component. The first conductive plate 1 can rotate relative to the second conductive plate 2. A flexible wire is also provided between the first conductive plate 1 and the second conductive plate 2. The two ends of the flexible wire are respectively connected to the first conductive plate 1 and the second conductive plate 2. Fixing holes 6 of different diameters are opened on the first conductive plate 1 and the second conductive plate 2. The fixing holes 6 on the first conductive plate 1 and the second conductive plate 2 are respectively used to install cable connecting bolts of different diameters. The flexible conductor ensures electrical connection between the first conductive plate 1 and the second conductive plate 2. The first and second conductive plates 1 and 2 have fixing holes 6 of different diameters. These fixing holes 6 are used to install cables of different specifications. For example, when connecting a 35kV cable and a 10kV cable, the fixing hole 6 on the first conductive plate 1 can be set to a diameter of 24mm for the 35kV cable, and the fixing hole 6 on the second conductive plate 2 can be set to a diameter of 12mm for the 10kV cable. For other cable specifications, different diameter fixing holes 6 can be designed to achieve cable installation. The rotating fixing component connects the first conductive plate 1 and the second conductive plate 2 and provides a certain degree of fixation. The first conductive plate 1, connected to the original cable, is directly fixed in place, while the second conductive plate 2, connected to the cable to be transferred, can rotate relative to the first conductive plate 1 as needed using the rotating fixing component. The flexible conductor can be provided with a certain redundant length to ensure that it does not affect the movement of the second conductive plate 2 relative to the first conductive plate 1. The design of having two conductive plates with fixing holes of different diameters 6 facilitates the connection of cables of different diameters, and the overall manufacturing cost is low. The cost of conductive plates and flexible wires is generally low, with the total cost around fifty yuan.

[0031] In some embodiments, the voltage connection device further includes a first gear 7, and the rotating fixing member includes a connecting rod 5 and at least one second gear 8. The end of the connecting rod 5 is fixedly connected to the teeth of the second gear 8. The first gear 7 is circumferentially rotatably fixed to the side of the first conductive plate 1 or the second conductive plate 2. The first gear 7 and the second gear 8 are meshed. The two ends of the connecting rod 5 are respectively connected to the first conductive plate 1 and the second conductive plate 2. The meshing transmission between the first gear 7 and the second gear 8 has a fixed transmission ratio. By controlling the number of rotations and the angle of the second gear 8, the relative rotation angle of the first conductive plate 1 and the second conductive plate 2 can be precisely matched.

[0032] In a preferred embodiment, the teeth of the first gear 7 and the second gear 8 are both rectangular. The rectangular gear can have a certain reverse self-locking capability by optimizing the tooth profile parameters (such as appropriately increasing the tooth surface inclination angle and controlling the fit clearance between the tooth tip and the tooth root). That is, when the second gear 8 stops rotating actively, the reverse rotation tendency of the first gear 7 (fixed to the conductive plate) due to the self-weight of the cable or external force will be limited by the tooth surface friction of the rectangular teeth, making it difficult to drive the second gear 8 to rotate in the opposite direction, thereby achieving self-locking.

[0033] In some embodiments, the rotating fixing member includes two second gears 8, which are respectively fixedly disposed at both ends of the connecting rod 5. Two first gears 7 are provided, located on the sides of the first conductive plate 1 and the second conductive plate 2, respectively. The arrangement of two sets of gears can adapt to more complex working conditions. When the second conductive plate 2 needs to deflect at a large angle, the connecting rod 5 can be rotated, causing the connecting rod 5 to drive the second conductive plate 2 to move relative to the first conductive plate 1. When a smaller deflection angle is required, only the second conductive plate 2 can be rotated, causing the second conductive plate 2 to rotate relative to the connecting rod 5, allowing the second conductive plate 2 to have a smaller range of motion.

[0034] In some embodiments, the voltage connection device further includes a fixing box with openings on three sides. The fixing box includes a top plate 11, a bottom plate 9, and a side plate 12. The bottom plate 9 is fixedly connected to the side of the first conductive plate 1 or the second conductive plate 2, which can be by welding or by using snap-fit, etc. For ease of disassembly and installation, snap-fit ​​is preferred. The two ends of the side plate 12 are respectively vertically fixedly connected to the first end of the top plate 11 and the first end of the bottom plate 9. The first gear 7 is rotatably disposed between the top plate 11 and the bottom plate 9. Both the top plate 11 and the bottom plate 9 are provided with arc-shaped grooves 10. The gear shaft of the second gear 8 is slidably disposed in the arc-shaped grooves 10. The first gear 7 is rotatably mounted between the top plate 11 and the bottom plate 9. The top plate 11 and the bottom plate 9 can restrict the axial movement of the first gear 7 (preventing the gear from deviating from the meshing position). At the same time, the gear shaft of the second gear 8 is slidably mounted in the arc-shaped groove 10. The arc-shaped groove 10 provides a directional sliding trajectory for the gear shaft, preventing the second gear 8 from shifting laterally during rotation or sliding, ensuring that the first gear 7 and the second gear 8 always maintain stable meshing, and avoiding adjustment jamming or electrical interruption caused by gear misalignment. Preferably, the arc-shaped groove 10 is a circular groove, which can almost guarantee 360-degree rotation of the second gear 8. The second gear 8 can deflect nearly 180 degrees in the first direction and also nearly 180 degrees in the opposite direction, ultimately achieving a deflection of nearly 360 degrees.

[0035] In some embodiments, the connecting rod 5 includes a cylinder 51 and two connecting rods 52. The cylinder 51 has multiple through holes along its length, and each connecting rod 52 has multiple slots along its length. The two connecting rods 52 are inserted into the two ends of the cylinder 51, and at least one connecting rod 52 can slide relative to the cylinder 51. After one through hole is aligned with one slot, a pin can be inserted. When the spacing between the first conductive plate 1 and the second conductive plate 2 needs to be increased or decreased due to installation scenario limitations (such as different cable lengths or changes in the spacing of fixed positions), the pin can be pulled out first, the connecting rod 52 can be pushed to slide along the cylinder 51 to the target length, and then the through hole and slot at the corresponding position can be aligned and the pin inserted to fix it. There is no need to replace the connecting rods 5 of different lengths, which improves the adaptability of the device to non-standard spacing scenarios. When the second conductive plate 2 needs to deflect at a large angle and is limited by the original length of the connecting rod 5 (e.g., the gear shaft easily exceeds the range of the arc groove 10 during deflection), the length of the connecting rod 5 can be extended first to provide a larger radius of motion for the rotation of the second conductive plate 2, thus adapting to more working conditions. It should be noted that the spacing between the two through holes and the diameter of the through holes can be designed according to actual needs. The design of the pin and the through hole should not be interpreted as a limitation on the adjustable length of the connecting rod.

[0036] In some embodiments, both links 52 are slidable relative to the insert 51. This slidable design of both links 52 allows for more flexible and wider adjustment of the length range of the connecting rod 5, further expanding the applicable working conditions.

[0037] In some embodiments, the flexible conductor 3 is ring-shaped. Both the first conductive plate 1 and the second conductive plate 2 have holes for first bolts 4. The two ends of the flexible conductor 3 are respectively fitted onto the first bolts 4 of the first conductive plate 1 and the first bolts 4 of the second conductive plate 2. The first bolts 4 can pass through the holes and be threaded into the first nuts. After the ring-shaped conductor is fitted onto the bolts, the tightening force of the bolts and nuts will tightly press the two ends of the ring-shaped conductor against the surface of the conductive plates, increasing the contact area and preventing connection failures and power transmission disruptions that can easily occur during point contact.

[0038] In some embodiments, both the first conductive plate 1 and the second conductive plate 2 are copper plates. The resistance loss when current passes through the copper plate is extremely low, effectively reducing energy waste caused by resistance heating during current transmission. This is particularly suitable for connection scenarios of medium and high voltage cables such as 35kV and 10kV. In medium and high voltage scenarios, the current is large, and the low resistivity can prevent insulation aging and structural deformation caused by overheating of the copper plate, ensuring electrical safety. Moreover, copper has a relatively low cost while ensuring good conductivity.

[0039] In some embodiments, the flexible conductor 3 is a copper wire, and the cross-sectional area of ​​the copper wire is not less than 120 square millimeters. A large cross-sectional area means that the conductor has a larger heat dissipation area. Even if a small amount of heat is generated, it can be quickly diffused into the air through the surface, avoiding heat accumulation that could cause the conductor insulation layer to melt or burn, or ignite surrounding components (such as mounting boxes or cable insulation layers), thus significantly reducing the risk of fire. Furthermore, the larger cross-sectional area reduces the total resistance to some extent, which is more conducive to current transmission.

[0040] In some embodiments, the length of the first conductive plate 1 and the second conductive plate 2 are both 60-70mm, the width is both 45-55mm, and the thickness is not less than 5mm. This thickness can provide certain support for the installation of the fixing box and prevent the fixing box from being unstable. For 35kV and 10kV operating conditions, a length of 65mm, a width of 50mm, and a thickness of 5mm are sufficient.

[0041] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A voltage connection device, characterized in that: The device includes a first conductive plate, a second conductive plate, and a rotating fixing component. The first conductive plate and the second conductive plate are connected by the rotating fixing component. The first conductive plate can rotate relative to the second conductive plate. A flexible wire is also provided between the first conductive plate and the second conductive plate. The two ends of the flexible wire are respectively connected to the first conductive plate and the second conductive plate. The first conductive plate and the second conductive plate have fixing holes of different diameters. The fixing holes on the first conductive plate and the fixing holes on the second conductive plate are respectively used to install cable connecting bolts of different diameters.

2. The voltage connection device according to claim 1, characterized in that: It also includes a first gear. The rotating fixing member includes a connecting rod and at least one second gear. The end of the connecting rod is fixedly connected to the teeth of the second gear. The first gear is circumferentially rotatable and axially fixed to the side of the first conductive plate or the second conductive plate. The first gear and the second gear are meshed together. The two ends of the connecting rod are respectively connected to the first conductive plate and the second conductive plate.

3. The voltage connection device according to claim 2, characterized in that: The rotating fixing component includes two second gears, which are respectively fixedly disposed at both ends of the connecting rod. There are two first gears, which are respectively located on the side of the first conductive plate and the side of the second conductive plate.

4. The voltage connection device according to claim 3, characterized in that: It also includes a fixing box with openings on three sides. The fixing box includes a top plate, a bottom plate, and side plates. The bottom plate is fixedly connected to the side of the first conductive plate or the second conductive plate. The two ends of the side plates are respectively vertically fixedly connected to the first end of the top plate and the first end of the bottom plate. The first gear is rotatably disposed between the top plate and the bottom plate. Both the top plate and the bottom plate are provided with arc-shaped grooves. The gear shaft of the second gear is slidably disposed in the arc-shaped grooves.

5. The voltage connection device according to claim 3, characterized in that: The connecting rod includes a cylinder and two connecting rods. The cylinder has multiple through holes along its length, and each connecting rod has multiple slots along its length. The two connecting rods are inserted into the two ends of the cylinder, and at least one connecting rod can slide relative to the cylinder. After one of the through holes is aligned with one of the slots, a pin can be inserted.

6. The voltage connection device according to claim 5, characterized in that: Both of the connecting rods are capable of sliding relative to the insert.

7. The voltage connection device according to claim 1, characterized in that: The flexible wire is ring-shaped, and a first bolt hole is provided on both the first conductive plate and the second conductive plate. The two ends of the flexible wire are respectively sleeved on the first bolt of the first conductive plate and the first bolt of the second conductive plate. The first bolt can pass through the first bolt hole and be threadedly connected to the first nut.

8. The voltage connection device according to claim 1, characterized in that: Both the first conductive plate and the second conductive plate are copper plates.

9. The voltage connection device according to claim 1, characterized in that: The flexible conductor is a copper wire, and the cross-sectional area of ​​the copper wire is not less than 120 square millimeters.

10. The voltage connection device according to claim 1, characterized in that: The length of the first conductive plate and the second conductive plate are both 60-70mm, the width is both 45-55mm, and the thickness is not less than 5mm.

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