Wire hooping mechanism and dynamic voltage restorer

Abstract

The utility model discloses a wire hooping mechanism, which relates to the technical field of electronic power, and mainly comprises a turntable, a plurality of connecting rods and a plurality of locking blocks, the turntable is rotatably arranged on a shell of a dynamic voltage restorer and can rotate around the axis of the turntable, the turntable is provided with a threading hole, one end of each locking block is rotatably connected with the turntable, and the other end of each locking block is connected with the connecting rod. One end of each locking block is connected with the rotating disc through a connecting rod, the two ends of each connecting rod are rotationally connected with the corresponding locking block and the rotating disc respectively, and a hole defined by the multiple locking blocks is used for allowing a connecting wire to penetrate through. The utility model also discloses a dynamic voltage restorer which comprises a shell, a control module, a main circuit module, a control panel and the wire hooping mechanism. According to the utility model, connecting wires of different specifications can be clamped, the connecting wires are prevented from loosening or falling off due to external vibration, and stable connection between the dynamic voltage restorer and a power grid bus is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electronic power technology, and in particular to a clamping mechanism and a dynamic voltage restorer. Background Technology

[0002] As a device for managing three-phase imbalance and voltage fluctuations in power distribution networks, dynamic voltage restorers can respond quickly when voltage dips or spikes occur in the distribution network. By injecting or absorbing a certain voltage into the grid, they restore the voltage amplitude to a normal level, ensuring that various electrical equipment can operate under stable voltage and avoiding problems such as equipment tripping, damage, or performance degradation caused by abnormal voltage.

[0003] However, some current dynamic voltage restorers are usually installed inside sheet metal cabinets. By extending the wires to the outside of the cabinet and connecting them to the power grid bus, the power system will generate various vibrations during operation, such as the operation of large nearby equipment and the instantaneous impact during power grid failures. This will cause the connecting wires to be constantly subjected to shaking and pulling forces. Under long-term action, the connection of the wires is prone to loosening or even falling off.

[0004] Patent CN214379286U discloses an experimental device for a dynamic voltage restorer. Its first arc ring and inner ring are trumpet-shaped, preventing severe bending when the wire enters the body of the dynamic voltage restorer through the wire conduit, thus avoiding wire damage. Although the first arc ring and inner ring can lock the connecting wire to a certain extent, their fixed diameter means they can only accommodate connecting wires of one thickness. This is unsuitable for real-world applications requiring wires or coils of different thicknesses depending on specific needs. Therefore, a wire clamping mechanism and a dynamic voltage restorer are urgently needed to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping mechanism and a dynamic voltage restorer to solve the problems existing in the prior art. It can clamp connecting wires of different specifications to prevent the connecting wires from loosening or falling off due to external vibration, and ensure the stable connection between the dynamic voltage restorer and the power grid bus.

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

[0007] This utility model provides a wire clamping mechanism, including a turntable, multiple connecting rods, and multiple locking blocks. The turntable is rotatably mounted on the housing of a dynamic voltage restorer and can rotate around its own axis. The turntable has a wire-passing hole. One end of each locking block is rotatably connected to the turntable and arranged circumferentially around the wire-passing hole. The other end of each locking block is connected to the turntable through a connecting rod, and both ends of the connecting rod are rotatably connected to the locking block and the turntable, respectively. The enclosing holes of the locking blocks are used for connecting wires to pass through, and the rotation of the turntable can drive the locking blocks to rotate to lock or release the connecting wires.

[0008] In some embodiments, a first limiting groove is provided on the first side of the turntable, and a first limiting block is fixedly provided on the outer shell. The first limiting block is slidably disposed in the first limiting groove to limit the maximum rotation angle of the turntable.

[0009] In some embodiments, a fixing ring is also included, which is fixedly disposed on the outer shell, and the turntable is rotatably disposed within the fixing ring. A second limiting groove is provided on the second side of the fixing ring, and a swinging member is fixedly disposed on the turntable. The swinging member is slidably disposed within the second limiting groove, and the swinging member can be connected to the drive mechanism. The swinging member slides within the second limiting groove, which can limit the maximum rotation angle of the turntable.

[0010] In some embodiments, the drive mechanism includes a push rod, one end of which is slidably connected to the oscillating member and is capable of driving the oscillating member to move, and the other end of which is used to apply force.

[0011] In some embodiments, a sleeve is also included, through which the push rod passes and is connected to the swing member, and the push rod is slidable relative to the sleeve, the sleeve being fixedly connected to the housing.

[0012] In some embodiments, a reset component is also included, which is connected to the push rod for resetting the push rod.

[0013] In some embodiments, the reset assembly includes an elastic element and a driven block disposed inside the sleeve, the driven block being fixedly connected to the push rod, a first end of the elastic element abutting against the driven block, and a second end of the elastic element abutting against the inner wall of the sleeve near the end of the swinging member.

[0014] In some embodiments, the enclosing surface of the plurality of locking blocks can be circular.

[0015] In some embodiments, a force-applying block is also included, which is fixedly disposed at the end of the push rod away from the swing member.

[0016] This utility model also provides a dynamic voltage restorer, including a housing, a main circuit module, and a clamping mechanism as described above. The main circuit module is disposed inside the housing and is used to realize dynamic voltage restoration.

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

[0018] This invention features multiple locking blocks, one end of which is rotatably connected to a turntable and arranged circumferentially around the wire-passing hole. The other end of each locking block is connected to the turntable via a connecting rod, with both ends of the connecting rod rotatably connected to both the locking block and the turntable. The enclosing holes of the locking blocks allow connecting wires to pass through. Rotating the turntable causes the connecting rod to move, which in turn causes the locking blocks to rotate around the point of connection between the locking blocks and the turntable. This changes the enclosing area of ​​the locking blocks, accommodating connecting wires of different specifications. Simultaneously, a clamping mechanism locks the connecting wire to the outer casing, preventing loosening or detachment due to external vibrations and ensuring a stable connection between the dynamic voltage restorer and the power grid bus. 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 1 This is a schematic diagram of the structure of the dynamic voltage restorer in some embodiments of this utility model;

[0021] Figure 2 for Figure 1 A magnified view of point A;

[0022] Figure 3 This is a schematic diagram of the hoop mechanism in some embodiments of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the reset component in some embodiments of this utility model.

[0024] In the diagram: 101-Outer shell; 102-Main circuit module; 103-Control module; 104-Cabinet door; 105-Control panel; 1-Force application block; 2-Sleeve; 3-Push rod; 4-Swing component; 5-Transmission column; 6-Rotating column; 7-Turntable; 8-Fixing ring; 9-Wire hole; 10-Locking block; 11-Connecting rod; 12-First limiting groove; 13-First limiting block; 14-Second limiting groove; 15-Driven block; 16-Elastic component. Detailed Implementation

[0025] 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.

[0026] The purpose of this utility model is to provide a clamping mechanism and a dynamic voltage restorer to solve the problems existing in the prior art. It can clamp connecting wires of different specifications to prevent the connecting wires from loosening or falling off due to external vibration, and ensure the stable connection between the dynamic voltage restorer and the power grid bus.

[0027] 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.

[0028] Example 1

[0029] like Figures 1-4As shown, this utility model provides a clamping mechanism, including a turntable 7, multiple connecting rods 11, and multiple locking blocks 10. The turntable 7 is rotatably mounted on the housing 101 of the dynamic voltage restorer and can rotate around its own axis. The turntable 7 has a wire-passing hole 9. One end of the multiple locking blocks 10 is rotatably connected to the turntable 7 and arranged around the wire-passing hole 9. Specifically, the locking blocks 10 can be provided with through holes, and the turntable 7 can be provided with insertion holes. The locking blocks 10 and the turntable 7 are rotatably connected by a rotating pin 6 passing through the through hole and inserting into the insertion hole. The other end of each of the multiple locking blocks 10 is connected to the turntable 7 through a connecting rod 11, and the two ends of the connecting rod 11 are rotatably connected to the locking blocks 10 and the turntable 7 respectively. The enclosing holes of the multiple locking blocks 10 are used for connecting wires to pass through. By rotating the turntable 7, the connecting rod 11 moves, causing the locking block 10 to rotate around the point where it connects to the turntable 7. This changes the enclosing area of ​​the multiple locking blocks 10, accommodating connecting wires of different specifications. The clamping mechanism secures the connecting wire to the housing, preventing axial movement and preventing loosening or detachment due to external vibrations, thus ensuring a stable connection between the dynamic voltage restorer and the power grid bus.

[0030] In some embodiments, a first limiting groove 12 is provided on the first side of the turntable 7, and a first limiting block 13 is fixedly provided on the outer shell 101. The first limiting block 13 is slidably disposed within the first limiting groove 12. The cooperation between the first limiting groove 12 and the first limiting block 13 can provide precise guidance for the rotation of the turntable 7, so that the turntable 7 can only rotate along the trajectory of the first limiting groove 12, effectively limiting the radial or axial offset that may occur during the rotation of the turntable 7, ensuring the stability and accuracy of the rotation of the turntable 7, and thus ensuring that the locking block 10 can change the enclosing area in the expected manner to accurately adapt to different specifications of connecting wires. Moreover, the cooperation between the first limiting groove 12 and the first limiting block 13 can prevent the turntable 7 from detaching from the outer shell 101 during rotation. Even when the equipment is subjected to external vibration or other external forces, the first limiting block 13 can still slide within the first limiting groove 12 to maintain the relative position of the turntable 7 and the outer casing 101, so as to avoid the effect of the clamping mechanism on the fixing effect of the connecting wire due to the loosening of the turntable 7, and ensure the stability of the connection between the dynamic voltage restorer and the power grid bus.

[0031] In some embodiments, the clamping mechanism further includes a fixing ring 8, which is fixedly mounted on the housing 101, and the turntable 7 is rotatably mounted within the fixing ring 8. The fixing ring 8, fixed to the housing 101, provides stable support and positioning for the turntable 7, making its rotation smoother and reducing wobbling and offset. A second limiting groove 14 is provided on the second side of the fixing ring 8, and a swing member 4 is fixedly mounted on the turntable 7. The swing member 4 is slidably mounted within the second limiting groove 14, and can connect with the drive mechanism to move in the same direction as the locking block. The second limiting groove 14 guides and limits the sliding of the swing member 4, ensuring that the swing member 4 moves along a predetermined trajectory during sliding, thereby making the rotation of the turntable 7 more stable and precise. This helps ensure the consistency and accuracy of the locking block 10's action, avoiding poor wire fixing due to inaccurate rotation of the turntable 7, and improving the working accuracy of the clamping mechanism.

[0032] It should be noted that the first side and the second side are two surfaces in different directions. The first side is the top or bottom plane of the turntable 7 (coplanar with the top or bottom plane of the fixing ring 8), and the second side is the outer arc surface of the fixing ring 8. The external force drives the turntable 7 to rotate through the swing member 4. The first limiting groove 12 and the second limiting groove 14 can work together to provide guidance and limiting for the movement of the turntable 7, providing a good guarantee for the normal rotation of the turntable 7.

[0033] In some embodiments, the drive mechanism includes a push rod 3, one end of which is slidably connected to the swing member 4, and the push rod 3 can push the swing member 4 to move. The other end of the push rod 3 is used to apply force. The force application method can be diversified; it can be applied manually for quick adjustment of the hoop mechanism in simple working conditions or emergencies; or it can be automated by connecting other power devices (such as cylinders, hydraulic cylinders, etc.) to adapt to different working needs and environments. Specifically, the swing member 4 is provided with a long strip groove, oriented radially along the turntable 7. A transmission column 5 is perpendicularly and fixedly connected to the end of the push rod 3 near the swing member 4. The transmission column 5 passes through the long strip groove. When force is applied to the push rod 3, it transmits the force to the transmission column 5. The transmission column 5 can engage with the long strip groove in the width direction, push the inner wall of the long strip groove, and slide along the long strip groove, thus enabling the push rod 3 to drive the turntable 7 to rotate.

[0034] In a preferred embodiment, a force-applying block 1 is provided at the end of the push rod 3 away from the swing member 4. The force-applying block 1 provides a point of leverage for the operator to push the push rod 3.

[0035] In some embodiments, the clamping mechanism further includes a sleeve 2, through which the push rod 3 passes and connects to the swing member 4. The sleeve 2 is fixedly connected to the housing 101. On one hand, the sleeve 2 provides precise guidance for the push rod 3, ensuring that the push rod 3 always moves linearly along a predetermined direction during movement, preventing the push rod 3 from wobbling or deviating, thereby ensuring that it can accurately push the swing member 4. On the other hand, the sleeve 2 provides a support point for the push rod 3, making the position of the push rod 3 relatively stable and preventing problems such as bending and damage due to prolonged suspension.

[0036] In some embodiments, the clamping mechanism further includes a reset component connected to the push rod 3 for resetting the push rod 3. The reset component automatically restores the push rod 3 to its initial position (the locking block is in a closed, locked state) after the push rod 3 completes its action of pushing the swing member 4 (i.e., the locking block is in the open, unlocked connecting wire state). This allows the clamping mechanism to quickly perform the next clamping operation without requiring manual reset of the push rod 3, saving operation time and improving work efficiency.

[0037] In a preferred embodiment, the reset assembly includes an elastic element 16 and a driven block 15. The elastic element 16 is preferably a spring. The driven block 15 is fixedly connected to the push rod 3 and slidably disposed inside the sleeve 2. The first end of the elastic element 16 abuts against the driven block 15, and the second end of the elastic element 16 abuts against the inner wall of the sleeve 2 near the end of the swing member 4. Specifically, the first end of the spring can be fixedly connected to the driven block 15, and the second end of the spring can be fixedly connected to the inner wall of the sleeve 2 near the end of the swing member 4. The elastic element 16 has good elastic restoring force. When the push rod 3 pushes the swing member 4, the driven block 15 compresses the elastic element 16 to store elastic potential energy. When the external force is removed, the elastic element 16 releases the elastic potential energy, pushing the driven block 15, thereby driving the push rod 3 to reset. This reset method can quickly and effectively restore the push rod 3 to its initial position, ensuring the normal working cycle of the coil mechanism and improving work efficiency. Moreover, during the movement of the push rod 3, the elastic element 16 can play a certain buffering role. When the push rod 3 reaches its limit position, the elastic element 16 can absorb the impact force of the push rod 3, reducing the rigid collision between the push rod 3 and components such as the sleeve 2.

[0038] It should be noted that the elastic element 16 can also be made of rubber, silicone, or other materials with good elasticity. The reset assembly can also be a hydraulic cylinder or similar structure. Specifically, the hydraulic cylinder can be fixed to the housing 101, and the piston rod of the hydraulic cylinder can be fixedly connected to the push rod 3. When it is necessary to increase the enclosing area of ​​the locking block 10, the piston rod can be extended to push the swinging element 4; when it is necessary to decrease the enclosing area of ​​the locking block 10 to clamp the connecting wire, the piston rod can be shortened.

[0039] In some embodiments, the enclosing surface of the multiple locking blocks 10 can be circular. A circular enclosing surface allows the connecting wire to be evenly stressed in the circumferential direction. The pressure exerted on the wire by the locking blocks 10 is more balanced in all directions, avoiding excessive local stress that could damage or deform the wire, thus better protecting it. The circular enclosing surface can better fit the circular connecting wire, achieving a tight fixation. Compared to other shapes of enclosing surfaces, a circular shape minimizes the gap between the wire and the locking blocks 10, preventing loosening or displacement of the wire during fixing, and ensuring the stability and reliability of the connection between the dynamic voltage restorer and the power grid bus. It should be noted that when the connecting rod 11 moves the locking blocks 10, the enclosing surface of the locking blocks 10 is not always circular; the circular shape of the locking blocks 10 is simply to match the specifications of the most commonly used connecting wires.

[0040] Example 2

[0041] This utility model also provides a dynamic voltage restorer, including a housing 101, a control module 103, a main circuit module 102, a control panel 105, and the clamping mechanism described in Embodiment 1. The control module 103 and the main circuit module 102 are housed within the housing 101, and the control panel 105 is mounted on the cabinet door 104 of the housing 101. The main circuit module 102, the control module 103, and the control panel 105 are sequentially connected via electrical signals. The housing 101 (specifically, a sheet metal cabinet) houses the main circuit module 102, the control module 103, and other components, providing protection and installation support. The main circuit module 102 performs the core electrical functions of the dynamic voltage restorer, addressing three-phase imbalance and voltage fluctuations in the power distribution network. The control module 103 controls and monitors the operation of the main circuit module 102, enabling control of the entire device. The cabinet door 104 is hinged to the outer surface of the sheet metal cabinet, facilitating operation, maintenance, and repair of the cabinet's interior by personnel. The control panel 105 provides a human-machine interface for operators to perform operations such as parameter setting and status monitoring.

[0042] When in use, firstly, the staff opens the cabinet door 104, which is hinged to the outer surface of the sheet metal cabinet, and performs inspection, maintenance and other operations on the main circuit module 102 and control module 103 inside. After completion, the cabinet door 104 is closed.

[0043] Subsequently, an external force is applied to the force-applying block 1, causing the force-applying block 1 to drive the push rod 3 and the transmission column 5 to move linearly. The transmission column 5 pushes the swinging piece 4, converting the linear motion of the push rod 3 into the rotational motion of the turntable 7, causing the turntable 7 to rotate along the inner wall of the fixed ring 8, and causing one end of the connecting rod 11 to move accordingly. Then, through the other end of the connecting rod 11, the locking block 10 is driven to rotate around the rotating column 6, causing several locking blocks 10 to open synchronously and release the obstruction of the wire hole 9.

[0044] Next, the wire to be connected is passed through the wire hole 9 opened on the outside of the sheet metal cabinet, and the force block 1 is released. The spring reaction drives the push rod 3 to move in the opposite direction, which in turn causes the locking block 10 to move in the opposite direction to clamp the connecting wire.

[0045] 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 thread crimping mechanism characterized by: The application relates to a wire clamping mechanism, which comprises a rotating disc, a plurality of connecting rods and a plurality of locking blocks, the rotating disc is rotationally arranged on the shell of a dynamic voltage restorer and can rotate around its axis, a wire hole is arranged on the rotating disc, one end of each of the locking blocks is rotationally connected with the rotating disc and arranged around the wire hole, the other end of each of the locking blocks is connected with the rotating disc through one connecting rod, the two ends of the connecting rod are rotationally connected with the locking block and the rotating disc respectively, the surrounding holes of the locking blocks are used for passing the connecting wire, and the rotating disc can rotate to lock or loosen the connecting wire.

2. The toggle mechanism of claim 1, wherein: A first limiting groove is arranged on the first side of the rotating disc, a first limiting block is fixedly arranged on the shell and slidably arranged in the first limiting groove to limit the maximum rotating angle of the rotating disc.

3. The toggle mechanism of claim 1, wherein: The application further comprises a fixing ring, which is fixedly arranged on the shell and in which the rotating disc is rotationally arranged, a second limiting groove is arranged on the second side of the fixing ring, a swing piece is fixedly arranged on the rotating disc and slidably arranged in the second limiting groove, and the swing piece can be connected with a driving mechanism, the swing piece can slide in the second limiting groove to limit the maximum rotating angle of the rotating disc.

4. The toggle mechanism of claim 3, wherein: The driving mechanism comprises a pushing rod, one end of the pushing rod is slidably connected with the swing piece and the pushing rod can push the swing piece to move, and the other end of the pushing rod is used for applying force.

5. The toggle mechanism of claim 4, wherein: The application further comprises a sleeve, the pushing rod passes through the sleeve and is connected with the swing piece, the pushing rod can slide relative to the sleeve, and the sleeve is fixedly connected with the shell.

6. The toggle mechanism of claim 5, wherein: The application further comprises a reset assembly, which is connected with the pushing rod and used for resetting the pushing rod.

7. The trocar of claim 6, wherein: The reset assembly comprises an elastic piece arranged in the sleeve and a driven block, the driven block is fixedly connected with the pushing rod, the first end of the elastic piece abuts against the driven block, and the second end of the elastic piece abuts against the inner wall of one end of the sleeve close to the swing piece.

8. The toggle mechanism of claim 1, wherein: The surrounding surface of the locking blocks after being surrounded can be circular.

9. The toggle mechanism of claim 4, wherein: The application further comprises a force applying block, which is fixedly arranged on the end of the pushing rod away from the swing piece.

10. A dynamic voltage restorer characterized by: The application relates to a dynamic voltage restorer, which comprises a shell, a main circuit module and the wire clamping mechanism according to any one of claims 1-9, the main circuit module is arranged in the shell and used for realizing dynamic voltage recovery.

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