A vacuum interrupter opening method, assembly and device

Abstract

The application discloses a vacuum arc-extinguishing chamber opening method, an assembly and a device, and belongs to the technical field of vacuum arc-extinguishing chamber detection, and the assembly and the device are used for realizing the method, and the method comprises the following steps: making the contact of the vacuum arc-extinguishing chamber be in an opening state through an auxiliary module, the auxiliary module comprises a supporting cylinder, a screw rod and a plate ring, and the method comprises the following steps: S1, forming an assembly which is supported at an inner end of the supporting cylinder, the screw rod is threadedly connected with a movable conducting rod, and the plate ring is threadedly connected with the screw rod; S2, applying an outward pulling force to the movable conducting rod through the screw rod, so that the contact is in the opening state; and S3, rotating the plate ring so that the inner end of the plate ring is supported at an outer end of the supporting cylinder, and the position of the screw rod on the axis of the screw rod is kept through the supporting cylinder and the plate ring. According to the scheme, the movable conducting rod is operated, the state locking before voltage resistance detection of the vacuum arc-extinguishing chamber is realized, and the loading and keeping before mechanical characteristic verification are realized, and meanwhile, the scheme has the characteristics of simple structure and convenience in simultaneous implementation on more vacuum arc-extinguishing chambers.

Description

Technical Field

[0001] This invention relates to the field of vacuum interrupter detection technology, and in particular to a vacuum interrupter tripping method, components and device. Background Technology

[0002] The vacuum interrupter is the core component of a vacuum circuit breaker. Its structure typically includes a moving contact and a stationary contact. The stationary contact is fixed to a stationary conductive rod, and the moving contact is fixed to a moving conductive rod. The moving conductive rod is sealed to a metal cover plate via a bellows. The bellows serves as the boundary of the vacuum interrupter and deforms to allow the moving conductive rod to move axially, thus driving the contacts to close and open. During factory testing of the vacuum interrupter, the moving conductive rod is usually placed in the open position for subsequent mechanical characteristic tests or insulation performance tests.

[0003] Existing technologies include detection devices and methods for vacuum circuit breakers and vacuum interrupters, including:

[0004] Patent application CN202311756658.0 discloses a testing system and method for a magnetically controlled pole-mounted vacuum circuit breaker. This system uses the upward movement of a lifting base to pull the stationary end of the vacuum bulb, simulating the opening operation of the vacuum interrupter during actual operation, thus providing conditions for withstand voltage testing. Based on the content disclosed in this application, it can be concluded that the vacuum circuit breaker and the system require the simultaneous fixing of multiple components such as the outer casing, the interrupter, and the stationary end; this represents a method for online operation of the vacuum circuit breaker within the system.

[0005] The patent application with application number CN202311365454.4 discloses a fixing tool for testing a solid-sealed electrode post. The technical concept is to achieve the purpose of clamping and fixing the solid-sealed electrode post product itself from the outside by operating and fixing the entire solid-sealed electrode post.

[0006] Other existing technologies related to vacuum interrupter testing include a scheme that uses a clamping mechanism to simultaneously fix the moving conductive rod and the stationary end cap. The specific purpose is to avoid the bellows being affected by torque during disassembly and to provide auxiliary positioning during assembly.

[0007] In summary, existing technologies lack a technical solution that can be directly connected to the vacuum interrupter structure for operating the moving conductive rod to complete relevant tests. For the factory testing of vacuum interrupters on the production line, it is necessary to provide further testing applications for vacuum interrupters to ensure the quality of finished products. Summary of the Invention

[0008] To address the aforementioned technical issues regarding the application of further testing for vacuum interrupters, this invention provides a method, components, and apparatus for opening a vacuum interrupter. This solution achieves state locking before withstand voltage testing and load maintenance before mechanical characteristic verification of the vacuum interrupter by manipulating a moving conductive rod. Furthermore, it features a simple structure and the ability to be applied to multiple vacuum interrupters simultaneously.

[0009] To address the above problems, the present invention provides a vacuum interrupter tripping method, components, and apparatus that solves the problems through the following technical points: A vacuum interrupter tripping method, wherein an auxiliary module acts on the vacuum interrupter to put the contacts of the vacuum interrupter in a tripped state, wherein the auxiliary module includes a support cylinder, a screw, and a plate ring, and the vacuum interrupter includes a moving conductive rod and a guide sleeve, and the method includes the following steps:

[0010] S1. The auxiliary module is assembled with the vacuum interrupter, specifically forming an assembly assembly in which the inner end of the support cylinder is supported by the outer end of the guide sleeve, the screw and the moving conductive rod are threadedly connected by their internal threaded holes, and the plate ring is threadedly connected to the screw through its central hole.

[0011] S2, the open state is formed, specifically: the screw applies a force to the moving conductive rod to pull the moving conductive rod outward, so that the contacts of the vacuum interrupter are in the open state;

[0012] S3, the tripped state is locked, specifically: the rotating plate ring is rotated so that the inner end of the plate ring is supported on the outer end of the support cylinder, forming a support structure that maintains the position of the screw on its axis through the support cylinder and the plate ring.

[0013] The existing vacuum interrupter structure design includes the following structural form: a stationary end cover plate, a shielding cover, contacts, a bellows, a moving end cover plate, a stationary conductive rod, an insulating shell, a moving conductive rod, and a guide sleeve. The insulating shell is an integral cylindrical structure or a split, spliced ​​structure used to form a vacuum bubble. The shielding cover is installed inside the insulating shell. The contacts include a moving contact and a stationary contact. The moving contact is connected to the moving conductive rod, and the stationary contact is connected to the stationary conductive rod. The contacts are located inside the shielding cover. The stationary end cover plate and the moving end cover plate are fixed to both ends of the insulating shell. The stationary conductive rod is fixedly connected to the stationary end cover plate. The guide sleeve is fixed to the outer end of the moving end cover plate. The moving conductive rod, the moving end cover plate, and the guide sleeve are all in sliding fit. The bellows is sleeved on the moving conductive rod, with one end fixedly connected to the moving conductive rod and the other end fixedly connected to the moving end cover plate.

[0014] During the factory testing of vacuum interrupters, in order to complete the mechanical characteristic test or insulation performance test, it is necessary to separate the moving contact from the stationary contact. Usually, this is done by providing a pulling force to the moving conductive rod. In the traditional way, to achieve the separation, the vacuum interrupter needs to be put online. That is, the contact separation state can only be formed and maintained by the testing equipment providing a pulling force to the moving conductive rod. Once the vacuum interrupter is removed from the testing equipment, the contact will close naturally under the action of the bellows reset force. In certain testing projects for vacuum interrupters, such as detecting the elastic decay of bellows, the core operational elements include precisely controlling the contact opening distance and maintaining a stable opening state over a long period. This relies on the continuous pulling of the device, which affects testing efficiency: a single vacuum interrupter requires a set of testing equipment, and the usage time of the testing equipment is determined by the time the opening state is maintained. For example, in vacuum degree testing based on magnetron discharge, high voltage and magnetic field need to be applied to the vacuum interrupter when the contacts are open. If the opening state is unstable before connecting the high voltage source or magnetic field coil, it will affect the final measurement results. For example, when performing a moving contact centering check, traditional online equipment does not have a stable reference benchmark and cannot reliably observe whether the moving conductive rod deviates from the original design center axis under the influence of the bellows.

[0015] To overcome the problems of existing technologies where the opening state of the vacuum interrupter relies on online equipment, detection efficiency is limited, and there is a lack of independent and stable benchmarks, a vacuum interrupter opening method as described above is provided. The core concept of this method is to utilize an auxiliary module independent of the detection equipment, which, together with the structural features of the vacuum interrupter itself (i.e., the internal threaded hole at the end of the moving conductive rod and the guide sleeve), achieves rigid assembly and interlocking, ultimately constraining the contacts of the vacuum interrupter to a stable opening state. Specifically:

[0016] In this method, firstly, the screw and the moving conductive rod are connected by a thread, so that in step S2, the screw can provide tension to the moving conductive rod to obtain the opening state. Then, unlike the traditional solution that requires external equipment to continuously maintain the tension and cooperate with the continuous mechanical clamping of the vacuum bulb, this method uses a plate ring and a support cylinder to form a purely mechanical support system for locking the state of the moving conductive rod: by supporting the inner end face of the plate ring on the outer end face of the support cylinder, and the inner end face of the support cylinder on the outer end of the guide sleeve at the end of the vacuum bulb, the positions of the screw, the moving conductive rod and the moving contact in their respective axial directions are physically locked, so that the moving contact can continuously maintain a stable opening distance with the stationary contact with the assembly component as the smallest physical unit.

[0017] This solution achieves independent and long-term maintenance of the open state of the vacuum interrupter with the assembly component as the smallest physical unit, providing constant stress constraint conditions for the detection of bellows elastic decay. Compared with the existing technology that relies on the online completion of this operation, this method does not continuously rely on the clamping equipment and pulling equipment, and can perform open processing and maintain the open state of a larger number of vacuum interrupters under low cost conditions.

[0018] On the other hand, in the assembly, since the support cylinder directly uses the guide sleeve as the support reference, and the guide sleeve is a fixed structure on the vacuum bubble, the assembly formed by this method can establish a stable and reliable measurement reference system (using the support cylinder as the reference reference) for checking the centering change of the moving conductive rod under continuous tension or compression of the bellows. At the same time, it can avoid the interference of external force fluctuations or fixture stress on the detection accuracy in the traditional scheme.

[0019] Finally, in the vacuum degree detection of the vacuum interrupter based on the magnetically controlled discharge method, after obtaining the assembly with a stable opening state through the auxiliary module and method steps, the high voltage source is connected. Since the contact state is maintained by pure mechanical locking in the assembly, the stable opening state can effectively ensure the reliability of the final measurement result.

[0020] In one specific embodiment, in step S1, the minimum distance between the constrained plate ring and the nut is achieved by a spacer provided on the screw and located at the end where the nut is located;

[0021] In step S2, a lifting claw is inserted into the inner side of the nut through the gap between the plate ring and the nut, and in the state of fixed support cylinder or vacuum interrupter, the lifting claw acts on the inner end of the nut to apply a force to pull the moving conductive rod outward.

[0022] In step S3, the frictional force exerted by the friction wheel on the outer side of the plate ring forces the plate ring to rotate relative to the screw, and rotates until the inner end of the plate ring is supported by the outer end of the support cylinder.

[0023] In the above scheme, the spacer is used to limit the distance between the nut and the plate ring in the direction of the screw axis, so that the end of the nut near the screw always has a gap to provide the middle for the insertion of the lifting claw, thus making the method suitable for automated operation. The fixed support cylinder or vacuum interrupter is to constrain the vacuum interrupter so that it does not move with the moving conductive rod when the external pulling force is applied to the moving conductive rod through the nut. The friction force acting on the outer end of the plate ring forces the plate ring to rotate relative to the screw. On the one hand, the friction force forces the plate ring to displace on the screw axis. On the other hand, compared with using a sleeve to directly provide torque to the plate ring, this method utilizes the linearly adjustable friction force, and the linear adjustable force can be achieved with simple technical means, avoiding further pulling of the conductive rod after the plate ring contacts the support cylinder.

[0024] In one specific embodiment, the maximum value of the friction force is adjustable, and the maximum value is adjustable in any of the following ways: the friction wheel obtains rotational power through a transmission belt, the transmission belt adjusts the tension of the transmission belt and the friction wheel through an adjustment mechanism, and the maximum friction force between the transmission belt and the friction wheel is positively correlated with the tension.

[0025] The contact force between the friction wheel and the plate ring is adjustable.

[0026] In the above scheme, the maximum value of the friction force is adjustable, aiming to achieve the following: during automated operation, the maximum driving force transmitted from the friction wheel to the plate ring can be adaptively set to accommodate differences in thread tightness between different specifications of vacuum interrupters or different batches of products. Specifically, during the process of driving the plate ring to rotate via the friction wheel, if the friction force is too large, the friction wheel may still force the plate ring to continue rotating due to excessive friction even when the inner end face of the plate ring has already abutted against the outer end face of the support cylinder. This could further pull out the screw and moving conductive rod, causing the bellows to bear a tension or pressure exceeding the detection setting, resulting in the contact tripping distance exceeding the detection setting value. If the friction force is too small, it cannot overcome the thread friction between the plate ring and the screw, causing the plate ring to be unable to rotate along the screw axis to the predetermined locking position, or the time required to rotate to the predetermined locking position to be too long. This solution adjusts the maximum value of the friction force. On the one hand, it allows for setting an appropriate upper limit for the maximum friction force based on the actual conditions of different products. This ensures that when the plate ring reaches its limit position in contact with the support cylinder, slippage occurs between the friction wheel and the plate ring, or between the transmission belt and the friction wheel, automatically cutting off torque transmission and achieving overload protection. On the other hand, this method of adjusting the maximum friction force can be achieved simply by adjusting the tension of the transmission belt or the contact force between the friction wheel and the plate ring. It eliminates the need for complex torque sensors or closed-loop control systems, reducing the manufacturing cost and control difficulty of the automation device.

[0027] The above two implementation methods are parallel technical means. The principle of adjusting the tension of the transmission belt is as follows: the friction wheel obtains rotational power through the transmission belt. The maximum static friction between the transmission belt and the friction wheel is determined by the tension; the greater the tension, the greater the upper limit of the driving force of the transmission belt on the friction wheel, and vice versa, thus indirectly controlling the maximum friction force exerted by the friction wheel on the plate ring. The principle of adjusting the contact force between the friction wheel and the plate ring is: by changing the magnitude of the force exerted by the friction wheel on the plate ring, the maximum static friction force between them is directly changed. The two methods are technically equivalent, and those skilled in the art can flexibly choose the appropriate method based on the specific installation space and transmission layout when implementing this solution. Preferably, since the transmission belt itself undergoes certain deformation and vibration during transmission, to make the maximum friction force more precise, it is preferable to adjust the maximum friction force by changing the magnitude of the force exerted by the friction wheel on the plate ring.

[0028] In one specific embodiment, in step S1, the vacuum bubble of the vacuum interrupter is clamped by the third gripper assembly, and the support cylinder is clamped by the second gripper assembly. Both the third gripper assembly and the second gripper assembly are equipped with a pair of synchronously opening and closing grippers. The axis of the clamping space of the third gripper assembly is coaxial with the axis of the clamping space of the second gripper assembly.

[0029] The specific implementation process of step S1 is as follows:

[0030] The vacuum interrupter is held by the third gripper assembly with the guide sleeve facing upwards;

[0031] After the lower end of the support cylinder is supported on the upper end of the guide sleeve, the second gripper assembly clamps the support cylinder.

[0032] The screw is threaded into the internal threaded hole of the moving conductive rod.

[0033] The above solution provides a specific method for pulling out a moving conductive rod. Specifically, the vacuum bubble is clamped by the third gripper assembly and the support cylinder is clamped by the second gripper assembly. Through the synchronous opening and closing and the coaxial setting of the axes, it can be achieved that the relative positional accuracy of the support cylinder and the vacuum interrupter is maintained in a coaxial manner during the automated assembly process.

[0034] More specifically, in step S1, after the vacuum interrupter is clamped with the guide sleeve facing upwards, the support cylinder, under gravity, can maintain its lower end supported on the upper end of the guide sleeve. During the process of the second gripper assembly clamping the support cylinder, the radial thrust provided by the gripper to the support cylinder can correct the axis misalignment of the support cylinder and the vacuum bubble, ultimately achieving a coaxial state. Using this technique, on the one hand, during the lowering process of the support cylinder, its lower end face can naturally guide and accurately land on the upper end face of the guide sleeve; on the other hand, during the operation of the second gripper assembly, the axis misalignment is corrected. Passive alignment with coaxial lines improves assembly efficiency and final consistency of components. On the other hand, when the moving conductive rod is pulled out by the screw and locked by the plate ring, since conventional vacuum interrupters use a coaxial arrangement between the moving conductive rod and the vacuum bubble, the coaxiality of the above axes ensures that the support cylinder and the moving conductive rod are coaxial. In this assembly structure, the support provided by the plate ring to the moving conductive rod can prevent the moving conductive rod from generating a lateral bending moment due to the plate ring's off-center load, which would affect the accuracy and consistency of the opening distance and the uniformity of the force in the circumferential direction of the bellows.

[0035] This solution also relates to a vacuum interrupter circuit breaker assembly, including an auxiliary module. The auxiliary module is used to form an assembly with the vacuum interrupter. The auxiliary module includes a support cylinder, a screw, and a plate ring.

[0036] The assembly component is:

[0037] The inner end of the support cylinder is supported by the outer end of the guide sleeve; the screw and the moving conductive rod are threadedly connected through the internal thread hole; and the plate ring is threadedly connected to the screw through its central hole.

[0038] The dimensions of the plate ring meet the requirement that its position on the screw can be adjusted by rotating the plate ring so that the inner end of the plate ring is supported by the outer end of the support cylinder.

[0039] The above-mentioned tripping assembly is intended to provide an auxiliary module for implementing the method. The tripping assembly is intended to be assembled with the vacuum interrupter as a separate part, independent of the vacuum interrupter, when a tripping operation is required, to form the assembly, thereby making the tripping state of the vacuum interrupter no longer dependent on the continuous intervention of external detection equipment.

[0040] Specifically, the auxiliary module includes a support cylinder, a screw, and a plate ring. Each component serves as follows: the support cylinder acts as an axial reaction force transmitter, its inner end supporting the outer end of the guide sleeve, transmitting the locking reaction force to the fixed structure of the vacuum interrupter; the screw acts as a tension application and tripping distance maintenance component, one end connected to the internal threaded hole of the moving conductive rod, and the other end passing through the plate ring; the plate ring acts as a locking actuator, threadedly connected to the screw through a central hole, and its axial position on the screw is adjusted by rotation to support it on the support cylinder; the outer diameter limitation of the plate ring aims to achieve: along the screw axis... When the ring rotates towards the support cylinder, its inner end face can abut against the outer end face of the support cylinder without sinking into the support cylinder, thus forming a rigid limit. After the tripping assembly is assembled with the vacuum interrupter, the tension on the moving conductive rod is transmitted to the plate ring through the screw, the plate ring is transmitted to the support cylinder, and the support cylinder is transmitted to the guide sleeve and the moving end cover plate. Finally, it forms a static balance with the bellows reset force. When the plate ring rotates to abut against the support cylinder, the support cylinder, screw and plate ring form a stable axial force support system, which can maintain the tripping state without any external power source or clamping parts.

[0041] Unlike existing technologies that require continuous application of pulling force through testing equipment or fixation of the vacuum bulb by external clamps, this tripping assembly achieves independent and reliable tripping and locking with a minimalist component structure. It can be pre-assembled in batches with the vacuum interrupter on the production line and transferred to the subsequent testing station together, fundamentally changing the operation mode that requires continuous online operation for factory testing.

[0042] In one specific embodiment, a nut integrally formed with the screw is disposed on the screw, and a spacer is disposed at the end of the screw where the nut is located. The spacer provides support for the plate ring through its end and limits the minimum distance between the plate ring and the nut.

[0043] In the above scheme, the screw is equipped with a nut that is integral with the screw, and a spacer located at the end where the nut is located. As mentioned above, this structure aims to achieve:

[0044] The spacer limits the minimum distance between the plate ring and the nut, ensuring that there is always a gap between the nut and the plate ring that allows the lifting claws to engage, thus providing a structural basis for automated pulling operations.

[0045] This solution also relates to a vacuum interrupter opening device, including the opening assembly as described above, as well as a material platform, a first gripper module, a second gripper module, a lifting module, a tightening module and a locking module;

[0046] The material platform is used to place the auxiliary module;

[0047] The first gripper module is equipped with a first gripper assembly for gripping the auxiliary module from the material table;

[0048] The second gripper module is equipped with a second gripper assembly and a third gripper assembly. The second gripper assembly is used to grip the support cylinder, and the third gripper assembly is used to grip the vacuum bubble. Both the third gripper assembly and the second gripper assembly are equipped with a pair of synchronously opening and closing grippers. The axis of the clamping space of the third gripper assembly is coaxial with the axis of the clamping space of the second gripper assembly. The distance between the second gripper assembly and the third gripper assembly is adjustable.

[0049] The tightening module is equipped with a sleeve assembly for screwing the screw into the internal threaded hole on the moving conductive rod;

[0050] The lifting module is equipped with lifting claws for providing a force to pull the moving conductive rod outwards to the screw.

[0051] The locking module is equipped with a rotating unit for providing torque to the plate ring.

[0052] Based on the aforementioned tripping assembly, the above solution provides a tripping device adapted to the tripping method. Specifically, the device includes a material platform, a first gripper module, a second gripper module, a lifting module, a tightening module, and a locking module. The functions of each component in the tripping process are as follows:

[0053] The material platform is used to place auxiliary modules and serves as the starting station for the entire device. In practical applications, the material platform itself does not need to be equipped with active drive components; in automation implementation, it only needs to provide the function of placing auxiliary modules.

[0054] The first gripper module is used to transfer the auxiliary module from the material table to the subsequent work station. The first gripper assembly on it is used to grip the auxiliary module from the material table. Since the auxiliary module can exist on the material table in the form of three parts placed separately or in a pre-assembled device, the first gripper assembly can be configured to grip the three parts simultaneously or in stages according to the actual material organization. Preferably, since the screw and the plate ring have a threaded connection, the plate ring can support the end of the support cylinder. Therefore, the pre-assembled device placement method is preferred: the plate ring connected to the screw is supported on the support cylinder, the lower end of the screw is embedded in the support cylinder, and the lower end of the support cylinder is supported on the material table. After the first gripper assembly grips the support cylinder, the transfer is completed in the placement posture of the auxiliary module on the material table.

[0055] The second gripper module is responsible for positioning the vacuum interrupter and the support cylinder. It is equipped with a second gripper assembly and a third gripper assembly. The third gripper assembly clamps the vacuum bulb of the vacuum interrupter to fix it, while the second gripper assembly clamps the support cylinder to adjust its radial position on the guide sleeve. Both gripper assemblies are equipped with a pair of synchronously opening and closing grippers, and the clamping spatial axes of the two gripper assemblies are coaxial, thereby ensuring the positional accuracy of the support cylinder and the vacuum bulb. This provides an accurate positioning reference for the subsequent screw insertion and plate ring locking. The distance between the second and third gripper assemblies is adjustable to adapt to vacuum interrupter specifications with different axial lengths.

[0056] The sleeve assembly and lifting claw configured in the tightening module and lifting module are specifically used for: the sleeve assembly is used to screw the screw into the internal threaded hole of the moving conductive rod to realize the threaded connection between the screw and the moving conductive rod; the lifting claw is used to embed into the gap between the nut and the plate ring after the screw is screwed in and to provide an external pulling force to the nut to form the open state.

[0057] The rotating unit configured on the locking module is used to apply torque to the plate ring, causing the plate ring to rotate relative to the screw and move axially to the locking position where it abuts against the support cylinder, thus completing the final locking of the open state.

[0058] The above solution provides the structural foundation for the automated formation and maintenance of the vacuum interrupter's tripping state. Compared to manual assembly of auxiliary modules and the vacuum interrupter, the above device achieves fully automated operation from material handling, vacuum interrupter positioning, screw insertion, tripping, to plate ring locking through the division of labor and cooperation of each module. In application, each structure can be configured with motion units according to the actual workstation layout to achieve spatial position adjustment, thereby efficiently and consistently completing the tripping preprocessing of a single vacuum interrupter without manual intervention, providing reliable support for the batch factory testing of vacuum interrupters.

[0059] In one specific embodiment, the rotating unit is a friction wheel for interacting with the side of the plate ring;

[0060] The locking module also includes a transmission belt and an adjustment structure. The friction wheel obtains rotational power through the transmission belt, and the adjustment structure is configured in any of the following ways:

[0061] The tension of the transmission belt and the friction wheel is adjusted by an adjustment mechanism, and the maximum friction between the transmission belt and the friction wheel is positively correlated with the tension.

[0062] The adjustment mechanism is used to adjust the contact force between the friction wheel and the plate ring.

[0063] The above provides a specific implementation of the locking module. Specifically, the friction wheel, acting as a friction transmission component, contacts the outer surface of the plate ring, driving the plate ring to rotate through friction. The transmission belt transmits the rotational power to the friction wheel, and the adjustment structure is used to adjust the maximum friction force. In this solution, the adjustment structure is configured in two parallel ways:

[0064] Firstly, by adjusting the structure, the tension between the transmission belt and the friction wheel can be changed. The tension determines the maximum static friction between the transmission belt and the friction wheel. The greater the tension, the greater the upper limit of the driving force that the transmission belt can transmit to the friction wheel, and vice versa. This indirectly controls the maximum friction force that the friction wheel acts on the plate ring.

[0065] Secondly, by adjusting the structure, the contact force between the friction wheel and the plate ring can be directly changed. The magnitude of this contact force directly determines the maximum static friction force between the friction wheel and the plate ring, thereby directly controlling the maximum friction force.

[0066] The two methods described above are functionally equivalent and can be flexibly selected based on the installation space and transmission layout.

[0067] The solution using a friction wheel in conjunction with an adjustment structure has advantages over methods such as directly driving the plate ring rotation with a rigid sleeve. These advantages are as follows: when the inner end face of the plate ring abuts against the outer end face of the support cylinder, if the rigid sleeve continues to input torque, it will force the plate ring to continue rotating, causing excessive pulling of the conductive rod. However, the friction wheel slips after reaching the maximum friction threshold, automatically interrupting torque transmission. Overload protection can be achieved without an additional torque sensor, the control logic is simple, and the device cost is low.

[0068] In one specific embodiment, the locking module includes a slide table, a second slide rail, a first slide rail, and a spring;

[0069] The second slide rail is slidably fitted on the slide table, the first slide rail is slidably fitted on the second slide rail, the friction wheel is mounted on the first slide rail, and the spring serves as an elastic support between the second slide rail and the first slide rail;

[0070] The sliding fit relationship between the first slide rail and the second slide rail is as follows: the first slide rail can slide relative to the second slide rail in the direction of the contact force between the friction wheel and the plate ring;

[0071] The spring is configured to provide a supporting force to the first slide rail in the direction of the contact force between the friction wheel and the plate ring through elastic compression.

[0072] The above provides a more specific implementation of the locking module. Specifically, this structure provides elastic floating support for the friction wheel through the cooperation of the slide table, the second slide rail, the first slide rail, and the spring. Its composition and function are as follows:

[0073] The slide table serves as the basic mounting component, supporting the entire locking module and driving its overall movement to adjust the position of the friction wheel in space.

[0074] The second slide rail is slidably fitted onto the slide table, and the first slide rail is slidably fitted onto the second slide rail. The friction wheel is mounted on the first slide rail to form a two-stage sliding relationship. In this way, the first slide rail can slide relative to the second slide rail in the direction of the contact force between the friction wheel and the plate ring, that is, in the direction in which the friction wheel presses against the plate ring, to adapt to the establishment and release of the contact force between the friction wheel and the plate ring; the second slide rail can slide relative to the slide table in the same direction to achieve a larger range of retraction or feed.

[0075] The spring, acting as an elastic support between the first and second slide rails, is configured to provide a supporting force to the first slide rail along the direction of the contact force between the friction wheel and the plate ring through elastic compression. The function of this supporting force is as follows: when the friction wheel has not yet contacted the plate ring, the spring keeps the first slide rail in an extended state; when the friction wheel contacts the plate ring, the spring compression increases, and its elastic force also increases. This elastic force and the normal force exerted by the friction wheel on the plate ring form an action-reaction relationship. When the spring is compressed to the equilibrium position, it corresponds to a certain magnitude of contact force. Based on this scheme, the contact force can be adjusted by adjusting the initial compression of the spring or by selecting springs with different stiffnesses.

[0076] The specific operational flow of this solution in application is as follows: In the overall operation of the locking module, the slide table drives the second slide rail and the first slide rail to feed towards the plate ring. After the friction wheel contacts the plate ring, the reaction force of the plate ring on the friction wheel pushes the first slide rail to compress the spring. The greater the spring compression, the greater the contact force of the friction wheel pressing against the plate ring. When the contact force reaches the preset value, the friction wheel and the plate ring can transmit a friction force sufficient to drive the plate ring to rotate. At the same time, it ensures that after the plate ring is pressed against the support cylinder, the friction wheel can slip when the maximum static friction force is exceeded, thereby achieving overload protection.

[0077] Furthermore, the sliding of the second slide rail relative to the slide table provides a greater clearance stroke, which is used to avoid rigid collision between the friction wheel and the plate ring during initial contact, or to provide sufficient operating space during maintenance or changeover.

[0078] The above structure achieves controllable adjustment of contact force and overload protection with a simple linear slide rail and spring. It does not require the configuration of active force-applying components such as cylinders and motors. The structure is compact, low in cost, and reliable in operation.

[0079] In one specific embodiment, some or all of the five modules—the first gripper module, the second gripper module, the lifting module, the tightening module, and the locking module—are equipped with motion units.

[0080] The motion unit on the first gripper module is used to adjust the position of the first gripper assembly in space. This position adjustment is used to adapt to the placement position of the auxiliary module on the material table and the spatial position of the second gripper assembly on the second gripper module.

[0081] The motion unit on the second gripper module is used to realize the synchronous adjustment of the positions of the second gripper assembly and the third gripper assembly in space. This synchronous adjustment is used to adapt to the spatial position of at least one of the sleeve assembly, lifting claw, and rotating unit.

[0082] The motion unit on the tightening module is used to adjust the position of the sleeve assembly in space, and this position adjustment is used to adapt to the spatial positions of the second gripper assembly and the third gripper assembly.

[0083] The motion unit on the lifting module is used to adjust the position of the lifting claw in space, and this position adjustment is used to adapt to the positions of the second gripper assembly and the third gripper assembly.

[0084] The motion unit on the locking module is used to adjust the position of the rotating unit in space, and this position adjustment is used to adapt to the positions of the second gripper assembly and the third gripper assembly.

[0085] The above scheme further provides the configuration relationship of each structural motion unit, aiming to achieve: by configuring motion units for functional modules, the position adaptation and automatic connection of the operated objects between each process can be realized, which facilitates the automatic completion of obtaining the opening status of the vacuum interrupter and locking the opening status.

[0086] Specifically, the motion unit on the first gripper module is used to transfer the auxiliary module from the material table to the second gripper module, enabling material transfer between workstations; the motion unit on the second gripper module is used to synchronously adjust the positions of the second and third gripper assemblies, so that the clamped vacuum interrupter is sequentially aligned with the working positions of the sleeve assembly, lifting claw, and rotating unit, enabling process switching without repeated clamping; the motion unit on the tightening module is used to align the sleeve assembly with the end of the screw and move synchronously with the axial feed of the screw during the screwing process; the motion unit on the lifting module is used to accurately insert the lifting claw into the gap between the nut and the plate ring and move synchronously with the outward movement of the conductive rod during the pulling process; the motion unit on the locking module is used to make the rotating unit contact the outer surface of the plate ring and maintain contact during the locking process.

[0087] Through the above-mentioned motion unit configuration, each module forms an automated operation chain of "clamping, transferring, positioning, screwing in, pulling out, and locking" in time sequence. The positioning accuracy is guaranteed by the repeatability of the motion unit. At the same time, through flexible adjustment of the spatial position, the device can be compatible with vacuum interrupters of different specifications, thus improving its versatility.

[0088] The present invention has the following beneficial effects:

[0089] This solution enables the vacuum interrupter to achieve both opening and locking states. The purely mechanical locking system, consisting of a screw, plate ring, and support cylinder, ensures that the vacuum interrupter can maintain its opening state even after being disconnected from other equipment (such as the aforementioned opening device). The assembled components allow for time decoupling of the opening operation and testing process: the opening pre-processing can be completed in batches on the production line, and after completion, the components are transferred to various testing stations. This changes the traditional approach where the opening state formation, maintenance, and testing of the vacuum interrupter are all performed on the testing device after it is brought online.

[0090] In this scheme, the stable opening distance of the vacuum interrupter on the assembly component provides constant stress observation conditions for the detection of the elastic decay of the bellows; it provides a repeatable electric field boundary for the vacuum degree detection by the magnetron discharge method; and the structure of the support cylinder with the guide sleeve as the reference establishes a fixed measurement reference system for the neutrality check of the moving conductive rod. Attached Figure Description

[0091] Figure 1 This is a state diagram of a specific embodiment of the assembly component described in this solution;

[0092] Figure 2 To Figure 1 The sectional view obtained after cutting the upper part of the structure shown;

[0093] Figure 3 This is a schematic diagram of a specific embodiment of the vacuum interrupter circuit breaker device described in this solution;

[0094] Figure 4 for Figure 3 Top view of the structure shown;

[0095] Figure 5 for Figure 3 Enlarged view of part A in the middle;

[0096] Figure 6 for Figure 3 Enlarged view of part B in the middle;

[0097] Figure 7 for Figure 3 A magnified view of part C in the middle.

[0098] The reference numerals in the figure are as follows: 1. Nut; 2. Spacer; 3. Plate ring; 4. Screw; 5. Support cylinder; 6. Guide sleeve; 7. Moving end cover plate; 8. Vacuum bubble; 9. Stationary end cover plate; 10. Stationary conductive rod; 11. Internal threaded hole; 12. Moving conductive rod; 13. Material platform; 14. Second gripper module; 15. First gripper module; 16. Lifting module; 17. Tightening module; 18. Locking module; 19. First gripper assembly; 20. Second gripper assembly; 21. Third gripper assembly; 22. Lifting claw; 23. Sleeve assembly; 24. Friction wheel; 25. Transmission belt; 26. Adjustment structure; 27. First slide rail; 28. Second slide rail; 29. ​​Slide table; 30. Spring; 100. Assembly assembly. Detailed Implementation

[0099] The following description, in conjunction with the following embodiments and appendices, Figure 1 To the attached Figure 7 The present invention will be further described in detail below, but the present invention is not limited to the following embodiments:

[0100] Example 1:

[0101] A method for opening a vacuum interrupter, wherein an auxiliary module acts on the vacuum interrupter to put the contacts of the vacuum interrupter in an open state, wherein the auxiliary module includes a support cylinder 5, a screw 4, and a plate ring 3, and the vacuum interrupter includes a moving conductive rod 12 and a guide sleeve 6, and the method includes the following steps:

[0102] S1. The auxiliary module is assembled with the vacuum interrupter, specifically forming an assembly assembly 100 in which the inner end of the support cylinder 5 is supported by the outer end of the guide sleeve 6, the screw 4 is threadedly connected to the internal threaded hole 11 of the moving conductive rod 12, and the plate ring 3 is threadedly connected to the screw 4 through its central hole.

[0103] S2, the open state is formed, specifically: the screw 4 applies a force to the moving conductive rod 12 to pull the moving conductive rod 12 outward, so that the contacts of the vacuum interrupter are in the open state;

[0104] S3, the open state is locked, specifically: the rotating plate ring 3 is rotated so that the inner end of the plate ring 3 is supported on the outer end of the support cylinder 5, forming a support structure that maintains the position of the screw 4 on its axis through the support cylinder 5 and the plate ring 3.

[0105] The existing vacuum interrupter structure design includes the following structural form: a stationary end cover plate 9, a shield, contacts, a bellows, a moving end cover plate 7, a stationary conductive rod 10, an insulating shell, a moving conductive rod 12, and a guide sleeve 6. The insulating shell is an integral cylindrical structure or a split spliced ​​structure used to form a vacuum bubble 8. The shield is installed inside the insulating shell. The contacts include a moving contact and a stationary contact. The moving contact is connected to the moving conductive rod 12, and the stationary contact is connected to the stationary conductive rod 10. The contacts are located inside the shield. The stationary end cover plate 9 and the moving end cover plate 7 are respectively fixed to both ends of the insulating shell. The stationary conductive rod 10 is fixedly connected to the stationary end cover plate 9. The guide sleeve 6 is fixed to the outer end of the moving end cover plate 7. The moving conductive rod 12 is slidably engaged with both the moving end cover plate 7 and the guide sleeve 6. The bellows is sleeved on the moving conductive rod 12. One end of the bellows is fixedly connected to the moving conductive rod 12, and the other end is fixedly connected to the moving end cover plate 7.

[0106] During the factory testing of vacuum interrupters, in order to complete the mechanical characteristic test or insulation performance test, it is necessary to separate the moving contact from the stationary contact. Usually, this is done by providing a pulling force to the moving conductive rod 12. In the traditional way, to achieve the separation, the vacuum interrupter needs to be put online. That is, the contact separation state can only be formed and maintained by the pulling force of the moving conductive rod 12 provided by the testing equipment. Once the vacuum interrupter is removed from the testing equipment, the contact will close naturally under the action of the bellows reset force. In certain testing projects for vacuum interrupters, such as detecting the elastic decay of bellows, the core operational elements include precisely controlling the contact opening distance and maintaining a stable opening state over a long period. This relies on the continuous pulling of the device, which affects testing efficiency. A single vacuum interrupter requires a set of testing equipment, and the usage time of the testing equipment is determined by the time the opening state is maintained. For example, in vacuum degree testing based on the magnetron discharge method, high voltage and magnetic field need to be applied to the vacuum interrupter when the contacts are open. If the opening state is unstable before connecting the high voltage source or magnetic field coil, it will affect the final measurement results. For example, when performing a moving contact alignment check, traditional online equipment does not have a stable reference benchmark and cannot reliably observe whether the moving conductive rod 12 deviates from the original design center axis under the influence of the bellows.

[0107] To overcome the problems of existing technologies where the opening state of the vacuum interrupter relies on online equipment, detection efficiency is limited, and there is a lack of independent and stable benchmarks, a vacuum interrupter opening method as described above is provided. The core concept of this method is to utilize an auxiliary module independent of the detection equipment, which is rigidly assembled and interlocked with the structural features of the vacuum interrupter itself (i.e., the internal threaded hole 11 at the end of the moving conductive rod 12 and the guide sleeve 6), ultimately constraining the contacts of the vacuum interrupter to a stable opening state. Specifically:

[0108] In this method, firstly, the screw 4 is threadedly connected to the moving conductive rod 12, so that in step S2, the screw 4 can provide tension to the moving conductive rod 12 to obtain the opening state. Then, unlike the traditional solution that requires external equipment to continuously maintain the tension and cooperate with the continuous mechanical clamping of the vacuum bulb 8, this method uses the plate ring 3 and the support cylinder 5 to form a purely mechanical support system for locking the state of the moving conductive rod 12: by supporting the inner end face of the plate ring 3 on the outer end face of the support cylinder 5, and the inner end face of the support cylinder 5 on the outer end of the guide sleeve 6 at the end of the vacuum bulb 8, the positions of the screw 4, the moving conductive rod 12 and the moving contact in their respective axial directions are physically locked, so that the moving contact can continuously maintain a stable opening distance with the stationary contact with the assembly assembly 100 as the smallest physical unit.

[0109] This solution achieves independent and long-term maintenance of the vacuum interrupter's open state with assembly component 100 as the smallest physical unit, providing constant stress constraint conditions for bellows elastic decay detection. Compared to existing technologies that rely on online completion of this operation, this method does not continuously rely on clamping or pulling equipment, and can perform open processing and maintain the open state of a larger number of vacuum interrupters under low-cost conditions.

[0110] On the other hand, in the assembly assembly 100, since the support cylinder 5 directly uses the guide sleeve 6 as the support reference, and the guide sleeve 6 is a fixed structure on the vacuum bubble 8, the assembly assembly 100 formed by this method can establish a stable and reliable measurement reference system (using the support cylinder 5 as the reference reference) for checking the centering change of the moving conductive rod 12 under continuous tension or compression of the bellows. At the same time, it can avoid the interference of external force fluctuations or fixture stress on the detection accuracy in the traditional scheme.

[0111] Finally, in the vacuum degree detection of the vacuum interrupter based on the magnetic discharge method, the assembly component 100 with a stable opening state is obtained first through the auxiliary module and method steps, and then the high voltage source is connected. Since the contact state is maintained by pure mechanical locking in the assembly component 100, the stable opening state can effectively ensure the reliability of the final measurement result.

[0112] Example 2:

[0113] This embodiment is a further refinement of embodiment 1:

[0114] In step S1, the minimum distance between the constraint plate ring 3 and the nut 1 is achieved by the spacer 2 set on the screw 4 and located at the end where the nut 1 is located;

[0115] In step S2, the lifting claw 22 is inserted into the inner side of the nut 1 through the gap between the plate ring 3 and the nut 1, and in the state of fixed support cylinder 5 or vacuum interrupter, the lifting claw 22 acts on the inner end of the nut 1 to apply a force to pull the moving conductive rod 12 outward.

[0116] In step S3, the friction force exerted by the friction wheel 24 on the outer side of the plate ring 3 forces the plate ring 3 to rotate relative to the screw 4, and rotates until the inner end of the plate ring 3 is supported by the outer end of the support cylinder 5.

[0117] In the above scheme, the spacer 2 is used to limit the distance between the nut 1 and the plate ring 3 in the axial direction of the screw 4, so that the end of the nut 1 near the screw 4 always has a gap to provide the middle of the insertion of the lifting claw 22, thereby making the method suitable for automated operation. The fixed support cylinder 5 or vacuum interrupter is to constrain the vacuum interrupter so that it does not move with the moving conductive rod 12 during the process of applying an external pulling force to the moving conductive rod 12 through the nut 1. The friction force acting on the outer end of the plate ring 3 forces the plate ring 3 to rotate relative to the screw 4. On the one hand, the friction force forces the plate ring 3 to move on the axis of the screw 4. On the other hand, compared with using a sleeve or the like to directly provide torque to the plate ring 3, this method utilizes the linearly adjustable friction force, and the linear adjustable force can be achieved with simple technical means, avoiding further pulling of the conductive rod 12 after the plate ring 3 contacts the support cylinder 5.

[0118] Example 3:

[0119] This embodiment is a further refinement of embodiment 2:

[0120] The maximum value of the friction force is adjustable, and the maximum value is adjustable in any of the following ways: the friction wheel 24 obtains rotational power through the transmission belt 25, the transmission belt 25 adjusts the tension of the friction wheel 24 through the adjustment mechanism, and the maximum friction force between the transmission belt 25 and the friction wheel 24 is positively correlated with the tension.

[0121] The contact force between the friction wheel 24 and the plate ring 3 is adjustable.

[0122] In the above scheme, the maximum value of the friction force is adjustable, which aims to achieve the following: during automated operation, the maximum driving force transmitted from the friction wheel 24 to the plate ring 3 can be adaptively set to accommodate the differences in thread tightness between different specifications of vacuum interrupters or different batches of products. Specifically, during the process of driving the plate ring 3 to rotate through the friction wheel 24, if the friction force is too large, when the inner end face of the plate ring 3 has already abutted against the outer end face of the support cylinder 5, the friction wheel 24 may still force the plate ring 3 to continue rotating through excessive friction force, thereby further pulling out the screw 4 and the moving conductive rod 12, causing the bellows to bear a tension or pressure exceeding the detection setting, and causing the contact opening distance to exceed the detection setting value; if the friction force is too small, it is impossible to overcome the thread friction between the plate ring 3 and the screw 4, causing the plate ring 3 to be unable to rotate axially along the screw 4 to the predetermined locking position, or the time required to rotate to the predetermined locking position is too long. This solution adjusts the maximum value of the friction force. On the one hand, it allows for setting an appropriate upper limit for the maximum friction force based on the actual conditions of different products. This ensures that when the plate ring 3 reaches its limit position in contact with the support cylinder 5, slippage occurs between the friction wheel 24 and the plate ring 3, or between the transmission belt 25 and the friction wheel 24, automatically cutting off torque transmission and achieving overload protection. On the other hand, this method of adjusting the maximum friction force can be achieved simply by adjusting the tension of the transmission belt 25 or the contact force between the friction wheel 24 and the plate ring 3. It eliminates the need for complex torque sensors or closed-loop control systems, reducing the manufacturing cost and control difficulty of the automation device.

[0123] The above two implementation methods are parallel technical means. The principle of adjusting the tension of the transmission belt 25 is as follows: the friction wheel 24 obtains rotational power through the transmission belt 25. The maximum static friction between the transmission belt 25 and the friction wheel 24 is determined by the tension. The greater the tension, the greater the upper limit of the driving force of the transmission belt 25 on the friction wheel 24, and vice versa, thus indirectly controlling the maximum friction force exerted by the friction wheel 24 on the plate ring 3. The principle of adjusting the contact force between the friction wheel 24 and the plate ring 3 is as follows: by changing the magnitude of the force exerted by the friction wheel 24 on the plate ring 3, the maximum static friction force between the two is directly changed. The two methods are technically equivalent. Those skilled in the art can flexibly choose the appropriate method based on the specific installation space and transmission layout when implementing this solution. Preferably, since the transmission belt 25 itself will undergo certain deformation and vibration during transmission, to make the maximum friction force more accurate, it is preferable to adjust the maximum friction force by changing the magnitude of the force exerted by the friction wheel 24 on the plate ring 3.

[0124] Example 4:

[0125] This embodiment is a further refinement of embodiment 2:

[0126] In step S1, the vacuum bubble 8 of the vacuum interrupter is held by the third gripper assembly 21, and the support cylinder 5 is held by the second gripper assembly 20. Both the third gripper assembly 21 and the second gripper assembly 20 are equipped with a pair of synchronously opening and closing grippers. The axis of the clamping space of the third gripper assembly 21 is coaxial with the axis of the clamping space of the second gripper assembly 20.

[0127] The specific implementation process of step S1 is as follows:

[0128] The vacuum interrupter is held by the third gripper assembly 21 with the guide sleeve 6 facing upwards;

[0129] After the lower end of the support cylinder 5 is supported on the upper end of the guide sleeve 6, the second gripper assembly 20 clamps the support cylinder 5.

[0130] The screw 4 is threadedly connected to the internal threaded hole 11 of the moving conductive rod 12.

[0131] The above solution provides a specific method for pulling the moving conductive rod 12. Specifically, the vacuum bubble 8 is clamped by the third gripper assembly 21 and the support cylinder 5 is clamped by the second gripper assembly 20. Through the synchronous opening and closing and the coaxial setting of the axis, it can be achieved that the relative positional accuracy between the support cylinder 5 and the vacuum interrupter is maintained in a coaxial manner during the automated assembly process.

[0132] More specifically, in step S1, after the vacuum interrupter is clamped with the guide sleeve 6 facing upwards, the support cylinder 5, under gravity, can maintain its lower end supported on the upper end of the guide sleeve 6. During the process of the second gripper assembly 20 clamping the support cylinder 5, the radial thrust provided by the gripper to the support cylinder 5 can correct the axis misalignment of the support cylinder 5 and the vacuum bubble 8, ultimately achieving a coaxial state. Using this technique, on the one hand, during the lowering process of the support cylinder 5, its lower end face can naturally guide and accurately land on the upper end face of the guide sleeve 6, and on the other hand, during the operation of the second gripper assembly 20, the coaxial state is achieved. The dynamic alignment improves the assembly efficiency of the assembly component 100 and the consistency of the final state. On the other hand, when the moving conductive rod 12 is pulled out by the screw 4 and locked by the plate ring 3, since the conventional vacuum interrupter adopts the method of setting the moving conductive rod 12 and the vacuum bubble 8 coaxially, the coaxiality of the above axes can make the support cylinder 5 and the moving conductive rod 12 coaxial. Under this assembly structure, the support provided by the plate ring 3 to the moving conductive rod 12 can avoid the lateral bending moment of the moving conductive rod 12 caused by the eccentric load of the plate ring 3, which would affect the accuracy and consistency of the opening distance and the uniformity of the force in the circumferential direction of the bellows.

[0133] Example 5:

[0134] This embodiment provides a vacuum interrupter circuit breaker assembly for implementing the method described in Embodiment 1, including an auxiliary module. The auxiliary module is used to form an assembly 100 with the vacuum interrupter. The auxiliary module includes a support cylinder 5, a screw 4, and a plate ring 3.

[0135] The assembly component 100 is:

[0136] The inner end of the support cylinder 5 is supported on the outer end of the guide sleeve 6, the screw 4 is threadedly connected to the internal thread hole 11 of the moving conductive rod 12, and the plate ring 3 is threadedly connected to the screw 4 through its central hole.

[0137] The dimensions of the plate ring 3 satisfy the following: by rotating the plate ring 3 to adjust its position on the screw 4, the inner end of the plate ring 3 can be adjusted to support the outer end of the support cylinder 5.

[0138] The above-mentioned tripping assembly is intended to provide an auxiliary module for implementing the method. The tripping assembly is intended to be assembled with the vacuum interrupter as a separate part, independent of the vacuum interrupter, when a tripping operation is required, to form the assembly assembly 100, so that the tripping state of the vacuum interrupter no longer depends on the continuous intervention of external detection equipment.

[0139] Specifically, the auxiliary module includes a support cylinder 5, a screw 4, and a plate ring 3. Each component serves as follows: the support cylinder 5 acts as an axial reaction force transmitter, its inner end supported by the outer end of the guide sleeve 6, transmitting the locking reaction force to the fixed structure of the vacuum interrupter; the screw 4 acts as a tension application and tripping distance maintenance component, one end connected to the internal threaded hole 11 of the moving conductive rod 12, and the other end passing through the plate ring 3; the plate ring 3 acts as a locking actuator, threadedly connected to the screw 4 through a central hole, and its axial position on the screw 4 is adjusted by rotation to support it on the support cylinder 5; the outer diameter limitation of the plate ring 3 aims to achieve: along the axis of the screw 4... When the inner end face of the rotating component is rotated towards the support cylinder 5, it can abut against the outer end face of the support cylinder 5 without sinking into the support cylinder 5, thus forming a rigid limit. After the tripping assembly is assembled with the vacuum interrupter, the tension of the moving conductive rod 12 is transmitted to the plate ring 3 through the screw 4, the plate ring 3 is transmitted to the support cylinder 5, and the support cylinder 5 is transmitted to the guide sleeve 6 and the moving end cover 7. Finally, it forms a static balance with the bellows reset force. When the plate ring 3 rotates to abut against the support cylinder 5, the support cylinder 5, the screw 4 and the plate ring 3 form a stable axial force support system, which can maintain the tripping state without any external power source or clamping parts.

[0140] Unlike existing technologies that require continuous application of pulling force through testing equipment or fixation of the vacuum bulb 8 through external clamps, this tripping assembly achieves independent and reliable tripping locking with a minimalist component structure. It can be pre-assembled in batches with the vacuum interrupter on the production line and then transferred to the subsequent testing station together, fundamentally changing the operation mode that requires continuous online operation for factory testing.

[0141] Example 6:

[0142] This embodiment is a further refinement of embodiment 5:

[0143] The screw 4 is equipped with a nut 1 that is integral with the screw 4. A spacer 2 is provided at the end of the screw 4 where the nut 1 is located. The spacer 2 provides support for the plate ring 3 through its end and limits the minimum distance between the plate ring 3 and the nut 1.

[0144] In the above scheme, the screw 4 is equipped with a nut 1 that is integral with the screw 4, and a spacer 2 located at the end where the nut 1 is located. As mentioned above, this structure aims to achieve:

[0145] The spacer 2 limits the minimum distance between the plate ring 3 and the nut 1, so that the gap between the nut 1 and the plate ring 3 can always be maintained so that the lifting claw 22 can be inserted, thus providing a structural basis for automated pulling operation.

[0146] Example 7:

[0147] Based on Embodiment 5, this embodiment provides a vacuum interrupter circuit breaker device, including the circuit breaker assembly described in Embodiment 5, and also includes a material platform 13, a first gripper module 15, a second gripper module 14, a lifting module 16, a tightening module 17, and a locking module 18.

[0148] The material platform 13 is used to place the auxiliary module;

[0149] The first gripper module 15 is equipped with a first gripper assembly 19 for gripping the auxiliary module from the material table 13;

[0150] The second gripper module 14 is equipped with a second gripper assembly 20 and a third gripper assembly 21. The second gripper assembly 20 is used to grip the support cylinder 5, and the third gripper assembly 21 is used to grip the vacuum bubble 8. Both the third gripper assembly 21 and the second gripper assembly 20 are equipped with a pair of synchronously opening and closing grippers. The axis of the clamping space of the third gripper assembly 21 is coaxial with the axis of the clamping space of the second gripper assembly 20. The distance between the second gripper assembly 20 and the third gripper assembly 21 is adjustable.

[0151] The tightening module 17 is equipped with a sleeve assembly 23 for screwing the screw 4 into the internal thread hole 11 on the moving conductive rod 12;

[0152] The lifting module 16 is equipped with a lifting claw 22 for providing the screw 4 with a force to pull the moving conductive rod 12 outward;

[0153] The locking module 18 is equipped with a rotating unit for providing torque to the plate ring 3.

[0154] Based on the aforementioned tripping assembly, the above solution provides a tripping device adapted to the tripping method. Specifically, the device includes a material platform 13, a first gripper module 15, a second gripper module 14, a lifting module 16, a tightening module 17, and a locking module 18. The functions of each structure in the tripping process are as follows:

[0155] Material station 13 is used to place auxiliary modules and serves as the starting station for the entire device. In specific applications, material station 13 itself does not need to be equipped with active drive components. In automation implementation, it only needs to provide the function of placing auxiliary modules.

[0156] The first gripper module 15 is used to transfer the auxiliary module from the material table 13 to the subsequent work station. The first gripper assembly 19 on it is used to grip the auxiliary module from the material table 13. Since the auxiliary module can exist on the material table 13 in the form of three parts placed separately or in a pre-assembled device, the first gripper assembly 19 can be configured to grip three parts at the same time or in steps according to the actual material organization. Preferably, since the screw 4 and the plate ring 3 have a threaded connection, the plate ring 3 can support the end of the support cylinder 5. Therefore, the pre-assembled device placement method is preferred: the plate ring 3 connected to the screw 4 is supported on the support cylinder 5, the lower end of the screw 4 is embedded in the support cylinder 5, the lower end of the support cylinder 5 is supported on the material table 13, and after the first gripper assembly 19 grips the support cylinder 5, the transfer is completed in the placement posture of the auxiliary module on the material table 13.

[0157] The second gripper module 14 is responsible for positioning the vacuum interrupter and the support cylinder 5. It is equipped with a second gripper assembly 20 and a third gripper assembly 21. The third gripper assembly 21 clamps the vacuum bubble 8 of the vacuum interrupter to fix it, and the second gripper assembly 20 clamps the support cylinder 5 to adjust its radial position on the guide sleeve 6. Both gripper assemblies are equipped with a pair of synchronously opening and closing grippers, and the clamping spatial axes of the two gripper assemblies are coaxial, thereby ensuring the positional accuracy of the support cylinder 5 and the vacuum bubble 8, and providing an accurate positioning reference for the subsequent screw 4 to be screwed in and the plate ring 3 to be locked. The distance between the second gripper assembly 20 and the third gripper assembly 21 is adjustable to adapt to vacuum interrupter specifications with different axial lengths.

[0158] The sleeve assembly 23 and the lifting claw 22 configured in the tightening module 17 and the lifting module 16 respectively are used for: the sleeve assembly 23 is used to screw the screw 4 into the internal thread hole 11 of the moving conductive rod 12 to realize the threaded connection between the screw 4 and the moving conductive rod 12; the lifting claw 22 is used to embed into the gap between the nut 1 and the plate ring 3 after the screw 4 is screwed in, and to provide an external pulling force to the nut 1 to form the open state.

[0159] The rotating unit configured on the locking module 18 is used to apply torque to the plate ring 3, so that the plate ring 3 rotates relative to the screw 4 and moves axially to the locking position where it abuts against the support cylinder 5, thus completing the final locking of the open state.

[0160] The above solution provides the structural foundation for the automated formation and maintenance of the vacuum interrupter's tripping state. Compared to manual assembly of auxiliary modules and the vacuum interrupter, the above device achieves fully automated operation from material handling, vacuum interrupter positioning, screw 4 screwing in, tripping, to locking of the plate ring 3 through the division of labor and cooperation of each module. In application, each structure can be configured with motion units according to the actual workstation layout to achieve spatial position adjustment, thereby efficiently and consistently completing the tripping pre-processing of a single vacuum interrupter without manual intervention, providing reliable support for the batch factory testing of vacuum interrupters.

[0161] Example 8:

[0162] This embodiment is a further refinement of embodiment 7:

[0163] The rotating unit is a friction wheel 24 that acts on the side of the plate ring 3;

[0164] The locking module 18 further includes a transmission belt 25 and an adjustment structure 26. The friction wheel 24 obtains rotational power through the transmission belt 25, and the adjustment structure 26 is configured in any of the following ways:

[0165] The tension of the transmission belt 25 and the friction wheel 24 is adjusted by the adjustment mechanism, and the maximum friction force between the transmission belt 25 and the friction wheel 24 is positively correlated with the tension.

[0166] The adjusting structure 26 is used to adjust the contact force between the friction wheel 24 and the plate ring 3.

[0167] The above provides a specific implementation of the locking module 18. Specifically, the friction wheel 24 acts as a friction transmission component, with its outer surface in contact with the outer surface of the plate ring 3. The plate ring 3 is driven to rotate by friction. The transmission belt 25 transmits the rotational power to the friction wheel 24. The adjustment structure 26 is used to adjust the maximum friction force. In this scheme, the adjustment structure 26 is configured in two parallel configurations:

[0168] Firstly, by adjusting the structure 26, the tension between the transmission belt 25 and the friction wheel 24 is changed. The tension determines the maximum static friction between the transmission belt 25 and the friction wheel 24. The greater the tension, the greater the upper limit of the driving force that the transmission belt 25 can transmit to the friction wheel 24, and vice versa. This indirectly controls the maximum friction force that the friction wheel 24 acts on the plate ring 3.

[0169] Secondly, by adjusting the structure 26, the contact force between the friction wheel 24 and the plate ring 3 is directly changed. The magnitude of this contact force directly determines the maximum static friction force between the friction wheel 24 and the plate ring 3, thereby directly controlling the maximum friction force.

[0170] The two methods described above are functionally equivalent and can be flexibly selected based on the installation space and transmission layout.

[0171] The solution of using friction wheel 24 in conjunction with adjustment structure 26 has the following advantages over the method of directly driving plate ring 3 to rotate using rigid sleeve: when the inner end face of plate ring 3 abuts against the outer end face of support cylinder 5, if the rigid sleeve continues to input torque, it will force plate ring 3 to continue rotating, causing excessive pulling of conductive rod 12; while friction wheel 24 slips after reaching the maximum friction threshold, automatically interrupting torque transmission, achieving overload protection without additional torque sensor, with simple control logic and low device cost.

[0172] Example 9:

[0173] This embodiment is a further refinement of embodiment 8:

[0174] The locking module 18 includes a slide table 29, a second slide rail 28, a first slide rail 27, and a spring 30;

[0175] The second slide rail 28 is slidably fitted on the slide table 29, the first slide rail 27 is slidably fitted on the second slide rail 28, the friction wheel 24 is mounted on the first slide rail 27, and the spring 30 serves as an elastic support between the second slide rail 28 and the first slide rail 27.

[0176] The sliding fit relationship between the first slide rail 27 and the second slide rail 28 is as follows: the first slide rail 27 can slide relative to the second slide rail 28 along the direction of the contact force between the friction wheel 24 and the plate ring 3;

[0177] The spring 30 is configured to provide a supporting force to the first slide rail 27 along the direction of the contact force between the friction wheel 24 and the plate ring 3 through elastic compression.

[0178] The above provides a more specific implementation of the locking module 18. Specifically, this structure, through the cooperation of the slide table 29, the second slide rail 28, the first slide rail 27, and the spring 30, provides elastic floating support for the friction wheel 24. Its composition and function are as follows:

[0179] The slide 29 serves as the basic mounting component, supporting the entire locking module 18 and driving its overall movement to achieve position adjustment of the friction wheel 24 in space;

[0180] The second slide rail 28 is slidably fitted onto the slide table 29, and the first slide rail 27 is slidably fitted onto the second slide rail 28. The friction wheel 24 is mounted on the first slide rail 27 to form a two-stage sliding relationship. In this way, the first slide rail 27 can slide relative to the second slide rail 28 in the direction of the contact force between the friction wheel 24 and the plate ring 3, that is, in the direction in which the friction wheel 24 presses against the plate ring 3, to adapt to the establishment and release of the contact force between the friction wheel 24 and the plate ring 3. The second slide rail 28 can slide relative to the slide table 29 in the same direction to achieve a larger range of retraction or feed.

[0181] Spring 30 serves as an elastic support between the first slide rail 27 and the second slide rail 28. It is configured to provide a supporting force to the first slide rail 27 along the contact force direction between the friction wheel 24 and the plate ring 3 through elastic compression. The function of this supporting force is as follows: when the friction wheel 24 has not yet contacted the plate ring 3, spring 30 keeps the first slide rail 27 in an extended state; when the friction wheel 24 contacts the plate ring 3, the compression of spring 30 increases, and its elastic force also increases. This elastic force and the positive pressure of the friction wheel 24 on the plate ring 3 form an action-reaction relationship. When spring 30 is compressed to the equilibrium position, it corresponds to a certain contact force magnitude. Based on this scheme, the contact force can be adjusted by adjusting the initial compression of spring 30 or by selecting springs 30 with different stiffnesses.

[0182] The specific operation flow of this solution in application is as follows: In the overall operation of the locking module 18, the slide table 29 drives the second slide rail 28 and the first slide rail 27 to feed towards the plate ring 3. After the friction wheel 24 contacts the plate ring 3, the reaction force of the plate ring 3 on the friction wheel 24 pushes the first slide rail 27 to compress the spring 30. The greater the compression of the spring 30, the greater the contact force of the friction wheel 24 pressing against the plate ring 3. When the contact force reaches the preset value, the friction wheel 24 and the plate ring 3 can transmit a friction force sufficient to drive the plate ring 3 to rotate. At the same time, it ensures that after the plate ring 3 is pressed against the support cylinder 5, the friction wheel 24 can slip when the maximum static friction force is exceeded, thereby achieving overload protection.

[0183] Furthermore, the sliding of the second slide rail 28 relative to the slide table 29 provides a greater clearance stroke, which is used to avoid rigid collision between the friction wheel 24 and the plate ring 3 during initial contact, or to provide sufficient operating space during maintenance or changeover.

[0184] The above structure achieves controllable adjustment of contact force and overload protection function with a simple linear slide rail and spring 30. It does not require the configuration of active force application components such as cylinders and motors. The structure is compact, low cost, and reliable in operation.

[0185] Example 10:

[0186] This embodiment is a further refinement of embodiment 7:

[0187] Among the five modules—first gripper module 15, second gripper module 14, lifting module 16, tightening module 17, and locking module 18—some or all of the modules are equipped with motion units.

[0188] The motion unit on the first gripper module 15 is used to adjust the position of the first gripper assembly 19 in space. This position adjustment is used to adapt to the placement position of the auxiliary module on the material table 13 and the spatial position of the second gripper assembly 20 on the second gripper module 14.

[0189] The motion unit on the second gripper module 14 is used to realize the synchronous adjustment of the positions of the second gripper assembly 20 and the third gripper assembly 21 in space. This synchronous adjustment is used to adapt to the spatial position of at least one of the sleeve assembly 23, the lifting claw 22, and the rotating unit.

[0190] The motion unit on the tightening module 17 is used to adjust the position of the sleeve assembly 23 in space, which is used to adapt to the spatial positions of the second gripper assembly 20 and the third gripper assembly 21.

[0191] The motion unit on the lifting module 16 is used to adjust the position of the lifting claw 22 in space, and this position adjustment is used to adapt to the positions of the second gripper assembly 20 and the third gripper assembly 21.

[0192] The motion unit on the locking module 18 is used to adjust the position of the rotating unit in space, and this position adjustment is used to adapt to the positions of the second gripper assembly 20 and the third gripper assembly 21.

[0193] The above scheme further provides the configuration relationship of each structural motion unit, aiming to achieve: by configuring motion units for functional modules, the position adaptation and automatic connection of the operated objects between each process can be realized, which facilitates the automatic completion of obtaining the opening status of the vacuum interrupter and locking the opening status.

[0194] Specifically, the motion unit on the first gripper module 15 is used to transfer the auxiliary module from the position of the material table 13 to the position of the second gripper module 14, realizing the flow of materials between workstations; the motion unit on the second gripper module 14 is used to realize the synchronous position adjustment of the second gripper assembly 20 and the third gripper assembly 21, so that the clamped vacuum interrupter is aligned with the working positions of the sleeve assembly 23, the lifting claw 22 and the rotating unit in sequence, realizing process switching without repeated clamping; the motion unit on the tightening module 17 is used to align the sleeve assembly 23 with the end of the screw 4, and moves synchronously with the axial feed of the screw 4 during the screwing process; the motion unit on the lifting module 16 is used to make the lifting claw 22 accurately embedded in the gap between the nut 1 and the plate ring 3, and moves synchronously with the outward movement of the conductive rod 12 during the pulling process; the motion unit on the locking module 18 is used to make the rotating unit contact the outer surface of the plate ring 3 and maintain contact during the locking process.

[0195] Through the above-mentioned motion unit configuration, each module forms an automated operation chain of "clamping, transferring, positioning, screwing in, pulling out, and locking" in time sequence. The positioning accuracy is guaranteed by the repeatability of the motion unit. At the same time, through flexible adjustment of the spatial position, the device can be compatible with vacuum interrupters of different specifications, thus improving its versatility.

[0196] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, other embodiments derived without departing from the technical solution of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for tripping a vacuum interrupter, characterized in that, This method uses an auxiliary module to act on the vacuum interrupter, causing the contacts of the vacuum interrupter to be in the open state. The auxiliary module includes a support cylinder (5), a screw (4), and a plate ring (3). The vacuum interrupter includes a moving conductive rod (12) and a guide sleeve (6). The method includes the following steps: S1. The auxiliary module is assembled with the vacuum interrupter, specifically forming an assembly assembly (100) in which the inner end of the support cylinder (5) is supported on the outer end of the guide sleeve (6), the screw (4) and the internal threaded hole (11) of the moving conductive rod (12) are threadedly connected, and the plate ring (3) is threadedly connected to the screw (4) through its central hole. S2, the open state is formed, specifically: the screw (4) applies a force to the moving conductive rod (12) to pull the moving conductive rod (12) outward, so that the contacts of the vacuum interrupter are in the open state; S3, the tripping state is locked, specifically: the rotating plate ring (3) is rotated so that the inner end of the plate ring (3) is supported on the outer end of the support cylinder (5), forming a support structure that maintains the position of the screw (4) on its axis through the support cylinder (5) and the plate ring (3).

2. The method for opening a vacuum interrupter according to claim 1, characterized in that, In step S1, the minimum distance between the constrained plate ring (3) and the nut (1) is achieved by the spacer (2) set on the screw (4) and located at the end where the nut (1) is located; In step S2, a lifting claw (22) is inserted into the inner side of the nut (1) through the gap between the plate ring (3) and the nut (1), and in the state of fixed support cylinder (5) or vacuum interrupter, the lifting claw (22) acts on the inner end of the nut (1) to apply a force to pull the moving conductive rod (12) outward. In step S3, the friction force exerted on the outer side of the plate ring (3) by the friction wheel (24) forces the plate ring (3) to rotate relative to the screw (4) until the inner end of the plate ring (3) is supported on the outer end of the support cylinder (5).

3. The method for opening a vacuum interrupter according to claim 2, characterized in that, The maximum value of the friction force is adjustable, and the maximum value is adjustable in any of the following ways: the friction wheel (24) obtains rotational power through the transmission belt (25), the transmission belt (25) adjusts the tension of the friction wheel (24) through the adjustment mechanism (26), and the maximum friction force between the transmission belt (25) and the friction wheel (24) is positively correlated with the tension. The contact force between the friction wheel (24) and the plate ring (3) is adjustable.

4. The method for opening a vacuum interrupter according to claim 2, characterized in that, In step S1, the vacuum bubble (8) of the vacuum interrupter is held by the third gripper assembly (21), and the support cylinder (5) is held by the second gripper assembly (20). The third gripper assembly (21) and the second gripper assembly (20) are both equipped with a pair of synchronously opening and closing grippers. The axis of the clamping space of the third gripper assembly (21) is coaxial with the axis of the clamping space of the second gripper assembly (20). The specific implementation process of step S1 is as follows: The vacuum interrupter is held by the third gripper assembly (21) with the guide sleeve (6) facing upward; After the lower end of the support cylinder (5) is supported on the upper end of the guide sleeve (6), the second gripper assembly (20) clamps the support cylinder (5). The screw (4) is threadedly connected to the internal threaded hole (11) of the moving conductive rod (12).

5. A vacuum interrupter circuit breaker assembly, characterized in that, It includes an auxiliary module for forming an assembly (100) with the vacuum interrupter. The auxiliary module includes a support cylinder (5), a screw (4), and a plate ring (3). The assembly component (100) is: The inner end of the support cylinder (5) is supported on the outer end of the guide sleeve (6), the screw (4) is threadedly connected to the internal thread hole (11) of the moving conductive rod (12), and the plate ring (3) is threadedly connected to the screw (4) through its central hole. The dimensions of the plate ring (3) satisfy the following: by rotating the plate ring (3) to adjust its position on the screw (4), the inner end of the plate ring (3) can be adjusted to be supported on the outer end of the support cylinder (5).

6. The vacuum interrupter circuit breaker assembly according to claim 5, characterized in that, The screw (4) is provided with a nut (1) which is integral with the screw (4). A spacer (2) is provided at the end of the screw (4) where the nut (1) is located. The spacer (2) is used to provide support for the plate ring (3) through the end and limit the minimum distance between the plate ring (3) and the nut (1).

7. A vacuum interrupter circuit breaker tripping device, characterized in that, The circuit breaker assembly as described in claim 5 further includes a material platform (13), a first gripper module (15), a second gripper module (14), a lifting module (16), a tightening module (17), and a locking module (18). The material platform (13) is used to place the auxiliary module; The first gripper module (15) is equipped with a first gripper assembly (19) for gripping the auxiliary module from the material table (13). The second gripper module (14) is equipped with a second gripper assembly (20) and a third gripper assembly (21). The second gripper assembly (20) is used to hold the support cylinder (5), and the third gripper assembly (21) is used to hold the vacuum bubble (8). The third gripper assembly (21) and the second gripper assembly (20) are each equipped with a pair of synchronously opening and closing grippers. The axis of the clamping space of the third gripper assembly (21) is coaxial with the axis of the clamping space of the second gripper assembly (20). The distance between the second gripper assembly (20) and the third gripper assembly (21) is adjustable. The tightening module (17) is equipped with a sleeve assembly (23) for screwing the screw (4) into the internal thread hole (11) on the moving conductive rod (12). The lifting module (16) is equipped with a lifting claw (22) for providing the screw (4) with a force to pull the moving conductive rod (12) outward. The locking module (18) is equipped with a rotating unit for providing torque to the plate ring (3).

8. The vacuum interrupter circuit breaker device according to claim 7, characterized in that, The rotating unit is a friction wheel (24) used to interact with the side of the plate ring (3); The locking module (18) further includes a transmission belt (25) and an adjustment structure (26), wherein the friction wheel (24) obtains rotational power through the transmission belt (25), and the adjustment structure (26) is configured in any of the following ways: The tension of the transmission belt (25) and the friction wheel (24) is adjusted by the adjustment mechanism (26), and the maximum friction force between the transmission belt (25) and the friction wheel (24) is positively correlated with the tension. The adjustment structure (26) is used to adjust the contact force between the friction wheel (24) and the plate ring (3).

9. A vacuum interrupter circuit breaker tripping device according to claim 8, characterized in that, The locking module (18) includes a slide (29), a second slide rail (28), a first slide rail (27), and a spring (30); The second slide rail (28) is slidably fitted on the slide table (29), the first slide rail (27) is slidably fitted on the second slide rail (28), the friction wheel (24) is mounted on the first slide rail (27), and the spring (30) serves as an elastic support between the second slide rail (28) and the first slide rail (27). The sliding fit relationship between the first slide rail (27) and the second slide rail (28) is as follows: the first slide rail (27) can slide relative to the second slide rail (28) along the contact force direction between the friction wheel (24) and the plate ring (3); The spring (30) is configured to provide a supporting force to the first slide rail (27) in the direction of the contact force between the friction wheel (24) and the plate ring (3) by elastic compression.

10. A vacuum interrupter circuit breaker tripping device according to claim 7, characterized in that, Among the five modules—the first gripper module (15), the second gripper module (14), the lifting module (16), the tightening module (17), and the locking module (18)—some or all of the modules are equipped with motion units. The motion unit on the first gripper module (15) is used to realize the position adjustment of the first gripper assembly (19) in space. This position adjustment is used to adapt to the placement position of the auxiliary module on the material table (13) and the spatial position of the second gripper assembly (20) on the second gripper module (14). The motion unit on the second gripper module (14) is used to realize the synchronous adjustment of the positions of the second gripper assembly (20) and the third gripper assembly (21) in space. This synchronous adjustment is used to adapt to the spatial position of at least one of the sleeve assembly (23), the lifting claw (22), and the rotating unit. The motion unit on the tightening module (17) is used to realize the position adjustment of the sleeve assembly (23) in space, which is used to adapt to the spatial position of the second gripper assembly (20) and the third gripper assembly (21); The motion unit on the lifting module (16) is used to adjust the position of the lifting claw (22) in space, which is used to adapt to the positions of the second gripper assembly (20) and the third gripper assembly (21); The motion unit on the locking module (18) is used to adjust the position of the rotating unit in space, which is used to adapt to the positions of the second gripper assembly (20) and the third gripper assembly (21).

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