An auxiliary structure based on a secondary separate current limiting complete equipment

Abstract

The utility model discloses an auxiliary structure based on primary and secondary separate current -limiting complete equipment, and the utility model relates to electrical equipment technical field. This auxiliary structure based on primary and secondary separate current -limiting complete equipment of the utility model includes the bottom plate, and the top of bottom plate is provided with the limiting mechanism, and the top of bottom plate is used for limiting the position of connecting component, and connecting component includes the limiting frame that is embedded and is installed in the top of support component, and the inside of limiting frame is inserted and is installed with the connecting column, and the top of connecting column is inserted and is installed with the insulating plate, and the below of limiting frame swing installation has the movable frame, and damping rod is inserted and is installed with support spring elastic deformation by the inclination rotation characteristic of itself, and the top insulating plate is rubber material, can effectively absorb, buffer shock energy, avoid that shock is directly transmitted to equipment ontology, solve the problem that the existing clamping structure has no buffer and the service life of equipment is shortened by vibration, improve equipment operation stability and service life.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, specifically to an auxiliary structure based on a primary and secondary separate current limiting complete set of equipment. Background Technology

[0002] Primary and secondary separate current limiting equipment generally refers to primary and secondary integrated circuit breakers. They are important equipment in power systems used to ensure the safe and stable operation of the power grid. Their functions mainly revolve around core objectives such as short-circuit current limiting, equipment protection, and system stability improvement. At the same time, due to the "primary and secondary separation" design feature, they also have the advantages of flexible adaptation and easy maintenance.

[0003] The existing Chinese utility model patent with publication number CN216789738U discloses an auxiliary structure for a primary and secondary separate current limiting device. It includes a current limiter body and a base located below the current limiter body. A mounting seat is fixed to one side of the base via a connecting plate. Clamping seats are slidably arranged on both sides of the top of the mounting seat. Semi-circular grooves are formed on opposite sides of the two clamping seats. This utility model relates to the technical field of current limiting devices. This auxiliary structure for a primary and secondary separate current limiting device, by slidably arranging clamping seats on both sides of the top of the mounting seat, utilizes the semi-circular grooves on opposite sides of the two clamping seats to match the diameter of the current limiter body. Rubber pads are fixed to the inner walls of the semi-circular grooves, and an auxiliary fixing mechanism is provided between the clamping seats and the base. This facilitates the fixing of the current limiter body, enhancing its stability after installation, and providing convenient operation and high work efficiency.

[0004] The aforementioned auxiliary structure restricts the position of the current-limiting device by clamping. When a large current flows through the primary circuit of the current-limiting device, the current-carrying conductor will generate electrodynamic force under the action of electromagnetic field, causing high-frequency vibration. In this way, there is no buffer structure between the clamping mechanism and the current-limiting device, which will lead to a shortening of the device's service life due to vibration. At the same time, it uses a hydraulic rod to drive the rack to move, which in turn drives the gear to rotate, causing the clamping seats on both sides of the gear to restrict the position of the current-limiting device. In the event of a power failure in the hydraulic rod's driving device, the rotation angle of the gear cannot be locked, causing the clamping seats to loosen and affecting the fixing effect. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an auxiliary structure based on a primary and secondary separate current limiting device, which solves the problems of the device being unable to limit the position of the current limiting device after the failure of the hydraulic rod drive source, as well as the poor shock absorption effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An auxiliary structure based on a primary and secondary separate current limiting device includes a base plate, and a limiting mechanism is provided above the base plate.

[0007] A support component, positioned above the base plate, is used to limit the position of the connecting components;

[0008] The connecting assembly includes a limiting frame fitted and mounted above a supporting assembly. A connecting column is inserted inside the limiting frame, and an insulating plate is inserted above the connecting column. A movable frame is movably mounted below the limiting frame. A transmission block is fitted and mounted on one side of the movable frame. A bidirectional lead screw is movably mounted below the limiting frame. A connecting rod is movably mounted on the surface of the bidirectional lead screw. A drive rod is movably mounted above the connecting rod. A ratchet is movably mounted inside the connecting rod. A miniature electric cylinder is fixedly mounted at the rear end of the ratchet.

[0009] Preferably, the support assembly includes a damping rod movably mounted above the base plate, a support spring movably mounted on the outer side of the damping rod, and a support frame movably mounted above the damping rod.

[0010] Preferably, there are four damping rods, with the bottom end of each damping rod rotatably connected to the base plate and the top end rotatably connected to the support frame.

[0011] Preferably, the two ends of the support spring are fixedly connected to the two ends of the damping rod, the bottom end of the damping rod is horizontally located on one side of the top end, and the whole is inclined, and the damping rods on both sides of the base plate are inclined in opposite directions.

[0012] Preferably, the insulating plate is connected to the limiting frame via a connecting column, and the movable frame and the limiting frame form a sliding connection. The inner side of the transmission block is provided with a groove that fits into the threaded structure of the bidirectional lead screw. The transmission block is inserted through the outer side of the bidirectional lead screw, and the outer side of the bidirectional lead screw is provided with two ratchets with opposite tooth directions.

[0013] Preferably, the connecting rod and the bidirectional lead screw are rotatably connected by bearings, the surface of the connecting rod is provided with a sliding groove, the driving rod and the connecting rod are slidably connected, the driving rod and the limiting frame are slidably connected, and the ratchet and the connecting rod are slidably connected.

[0014] Beneficial effects

[0015] This utility model provides an auxiliary structure based on a primary and secondary separate current limiting complete set of equipment. Compared with the prior art, it has the following advantages:

[0016] (1) The auxiliary structure of the primary and secondary separate current limiting equipment is provided by setting up support components. It uses four inclined damping rods with opposite inclination directions on both sides of the base plate, and supports the support springs fixedly connected to the damping rods at both ends. When the current limiting equipment generates high-frequency vibration due to the large current in the primary circuit, the damping rods use their own tilting rotation characteristics and the elastic deformation of the support springs. The upper insulating plate is made of rubber, which can effectively absorb and buffer the vibration energy and prevent the vibration from being directly transmitted to the equipment body. This solves the problem that the existing clamping structure has no buffer, which leads to the shortening of the equipment life due to vibration. It improves the stability of equipment operation and service life.

[0017] (2) The auxiliary structure of the primary and secondary separate current limiting equipment works by sliding the left drive rod to the right, causing the left connecting rod to rotate clockwise. The left micro electric cylinder pushes the ratchet to engage with the forward ratchet. At this time, the right micro electric cylinder drives the ratchet to separate from the reverse ratchet. The connecting rod drives the bidirectional screw to rotate forward through the ratchet. When the bidirectional screw rotates forward, the left transmission block drives the movable frame to slide outward on the left side. The two transmission blocks on both sides drive the movable frame to unfold smoothly and engage with the support frame for locking. The connecting rods, ratchet, and ratchet arranged symmetrically on both sides can counterbalance each other during normal operation, avoiding accidental unlocking due to factors such as unilateral force. After the micro electric cylinder fails, the bidirectional screw and the transmission block are connected by threads, and there is a large friction between the threaded pairs. This friction can effectively prevent the transmission block from moving on the bidirectional screw. Even if a certain external force is applied, as long as the external force is insufficient to overcome the friction between the threaded pairs, the transmission block will not be displaced, thus ensuring the stability of the movable frame position. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the support frame installation structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the damping rod installation structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the bidirectional lead screw structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the surface structure of the bidirectional lead screw of this utility model;

[0023] Figure 6 This is a schematic diagram of the connecting cross-section structure of this utility model;

[0024] In the diagram: 1. Base plate; 2. Limiting mechanism; 21. Support assembly; 211. Damping rod; 212. Support spring; 213. Support frame; 22. Connecting assembly; 221. Limiting frame; 222. Connecting column; 223. Insulating plate; 224. Movable frame; 225. Transmission block; 226. Two-way lead screw; 227. Connecting rod; 228. Drive rod; 229. Ratchet; 2210. Miniature electric actuator. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-6 This utility model provides a technical solution: an auxiliary structure based on a primary and secondary separate current limiting complete set of equipment includes a base plate 1, and a limit mechanism 2 is provided above the base plate 1.

[0027] A support assembly 21 is disposed above the base plate 1 to limit the position of the connecting assembly 22. The support assembly 21 includes a damping rod 211 movably mounted above the base plate 1. A support spring 212 is movably mounted on the outer side of the damping rod 211. A support frame 213 is movably mounted above the damping rod 211. There are four damping rods 211 in total. The bottom end of the damping rod 211 is rotatably connected to the base plate 1, and the top end is rotatably connected to the support frame 213. The two ends of the support spring 212 are fixedly connected to the two ends of the damping rod 211. The bottom end of the damping rod 211 is horizontally positioned on one side of the top end and is inclined as a whole. The damping rods 211 on both sides of the base plate 1 are inclined in opposite directions.

[0028] Specifically, the base plate 1 can limit the position of the limiting mechanism 2, absorb the force generated during vibration through the damping rod 211, the support spring 212 can support both ends of the damping rod 211 to prevent the upper support frame 213 from being compressed due to force, and the support frame 213 can limit the position of the connecting component 22.

[0029] The connecting assembly 22 includes a limiting frame 221 fitted and mounted above the support assembly 21. A connecting post 222 is inserted inside the limiting frame 221. An insulating plate 223 is inserted above the connecting post 222. A movable frame 224 is movably mounted below the limiting frame 221. A transmission block 225 is fitted and mounted on one side of the movable frame 224. A bidirectional lead screw 226 is movably mounted below the limiting frame 221. A connecting rod 227 is movably mounted on the surface of the bidirectional lead screw 226. A drive rod 228 is movably mounted above the connecting rod 227. A ratchet 229 is movably mounted inside the connecting rod 227. A miniature electric cylinder 2210 is fixedly mounted at the rear end of the ratchet 229. The flange 223 is connected to the limiting frame 221 via the connecting column 222. The movable frame 224 and the limiting frame 221 are slidably connected. The inner side of the transmission block 225 is provided with a groove that fits into the threaded structure of the double-acting screw 226. The transmission block 225 is inserted through the outer side of the double-acting screw 226. The outer side of the double-acting screw 226 is provided with two ratchets with opposite tooth directions. The connecting rod 227 and the double-acting screw 226 are rotatably connected via a bearing. The surface of the connecting rod 227 is provided with a sliding groove. The drive rod 228 and the connecting rod 227 are slidably connected. The drive rod 228 and the limiting frame 221 are slidably connected. The ratchet 229 and the connecting rod 227 are slidably connected.

[0030] Specifically, the miniature electric cylinder 2210 is model IMD3 / LD3. The limiting frame 221 can restrict the position of the insulating plate 223 through the connecting post 222. The insulating plate 223 is made of rubber, which can provide insulation while absorbing shock. The movement direction of the drive rod 228 is limited by the limiting frame 221 and can only slide horizontally. The drive rod 228 and the connecting rod 227 are mounted in two sets of mirror images symmetrically on both sides of the bottom of the limiting frame 221. The reciprocating motion of the drive rod 228 drives the connecting rod 227 to rotate. The miniature electric cylinder 2210 at the end of the ratchet 229 adjusts the ratchet 229. Maintaining engagement with the ratchet, when the connecting rod 227 rotates, the miniature electric cylinder 2210 pushes the ratchet 229 to engage with the ratchet. At this time, the connecting rod 227 can drive the bidirectional lead screw 226 to rotate. The bidirectional lead screw 226 is connected to the transmission block 225 fixed on one side of the movable frame 224. When the bidirectional lead screw 226 rotates, the movable frame 224 can slide outward and contact the support frame 213 under the restriction of the transmission block 225, thereby restricting the limiting frame 221 above the support frame 213. Meanwhile, all contents not described in detail in this specification are prior art known to those skilled in the art.

[0031] During operation, the primary and secondary separate current limiting equipment is first placed on the insulating plate 223 and connected by bolts. The insulating plate 223 is connected to the limiting frame 221 via the connecting post 222. The rubber insulating plate 223 serves both as insulation and as a preliminary buffer against minor vibrations during equipment operation. Since the drive rod 228 and the limiting frame 221 form a sliding connection, it can only slide horizontally. When the drive rod 228 slides, it engages with the sliding groove on the surface of the connecting rod 227, causing the connecting rod 227 to rotate around the bidirectional lead screw 226. At this time, the control micro... The electric cylinder 2210 extends, pushing the ratchet 229 to engage with the corresponding ratchet on the outer side of the double-acting screw 226. Since the ratchet teeth on both sides of the double-acting screw 226 face opposite directions, and the connecting rod 227 and drive rod 228 are symmetrically arranged, when the left drive rod 228 slides to the right, the left connecting rod 227 rotates clockwise, driving the double-acting screw 226 to rotate clockwise through the engagement of the left ratchet 229 with the forward ratchet; when the right drive rod 228 slides to the left, the right connecting rod 227 rotates counterclockwise, driving the double-acting screw 226 through the engagement of the right ratchet 229 with the reverse ratchet. When the bidirectional lead screw 226 rotates in reverse, the threads on its surface engage with the grooves on the inner side of the transmission block 225, causing the movable frame 224 to slide along the limit frame 221 until the movable frame 224 engages with the support frame 213, thus securing the limit frame 221 and the equipment above it. When the equipment generates high-frequency vibrations during operation, the vibrations are transmitted sequentially to the insulating plate 223, the limit frame 221, and the support frame 213. After the support frame 213 is subjected to force, it drives the damping rod 211, which is rotatably connected to its top, to move. The four inclined damping rods 211 with opposite directions on both sides will rotate. When the device moves, the outer support spring 212 is stretched or compressed accordingly. The damping characteristics of the damping rod 211 and the elastic deformation of the support spring 212 work together to absorb and buffer the vibration energy, reducing the impact of vibration on the equipment. When the equipment needs maintenance or disassembly, the micro electric cylinder 2210 is controlled to retract, so that the ratchet 229 on one side disengages from the ratchet structure. Then, through the drive rod 228 on the other side, the connecting rod 227 is driven to rotate the bidirectional lead screw 226 in the opposite direction, so that the movable frame 224 is retracted, releasing the fixation of the limit frame 221, and the equipment can be operated.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary structure based on a primary and secondary separate current limiting complete set of equipment, comprising a base plate (1), characterized in that, A limit mechanism (2) is provided above the base plate (1): A support component (21) is disposed above the base plate (1) to limit the position of the connecting component (22); The connecting assembly (22) includes a limiting frame (221) fitted and mounted above the support assembly (21). A connecting column (222) is inserted inside the limiting frame (221). An insulating plate (223) is inserted above the connecting column (222). A movable frame (224) is movably mounted below the limiting frame (221). A transmission block (225) is fitted on one side of the movable frame (224). A bidirectional lead screw (226) is movably mounted below the limiting frame (221). A connecting rod (227) is movably mounted on the surface of the bidirectional lead screw (226). A drive rod (228) is movably mounted above the connecting rod (227). A ratchet (229) is movably mounted inside the connecting rod (227). A miniature electric cylinder (2210) is fixedly mounted at the rear end of the ratchet (229).

2. The auxiliary structure of a primary and secondary separate current limiting complete set of equipment according to claim 1, characterized in that: The support assembly (21) includes a damping rod (211) movably mounted above the base plate (1), a support spring (212) movably mounted on the outside of the damping rod (211), and a support frame (213) movably mounted above the damping rod (211).

3. The auxiliary structure of a primary and secondary separate current limiting complete set of equipment according to claim 2, characterized in that: There are four damping rods (211). The bottom end of the damping rod (211) is rotatably connected to the base plate (1), and the top end is rotatably connected to the support frame (213).

4. The auxiliary structure of a primary and secondary separate current limiting complete set of equipment according to claim 2, characterized in that: The two ends of the support spring (212) are fixedly connected to the two ends of the damping rod (211). The bottom end of the damping rod (211) is horizontally located on one side of the top end and is inclined as a whole. The damping rods (211) on both sides of the base plate (1) are inclined in opposite directions.

5. The auxiliary structure of a primary and secondary separate current limiting complete set of equipment according to claim 1, characterized in that: The insulating plate (223) is connected to the limiting frame (221) through the connecting column (222). The movable frame (224) and the limiting frame (221) form a sliding connection. The inner side of the transmission block (225) is provided with a groove that fits into the thread structure of the bidirectional lead screw (226). The transmission block (225) is inserted through the outer side of the bidirectional lead screw (226). The outer side of the bidirectional lead screw (226) is provided with two ratchets with opposite tooth directions.

6. The auxiliary structure of a primary and secondary separate current limiting complete set of equipment according to claim 1, characterized in that: The connecting rod (227) and the double-acting lead screw (226) are rotatably connected by bearings. The surface of the connecting rod (227) is provided with a sliding groove. The driving rod (228) is slidably connected to the connecting rod (227). The driving rod (228) is slidably connected to the limiting frame (221). The ratchet (229) is slidably connected to the connecting rod (227).

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