Operating mechanism and split transmission structure for a rotating shaft

Abstract

This invention relates to the field of circuit breaker transmission structure technology, specifically a split transmission structure for the operating mechanism and the rotating shaft. The invention involves inserting and removing a plug-in block at one end of the main shaft, pinching the connecting rods on both sides of the coupling, compressing the limiting springs during the process, and then releasing the coupling on one side of the main shaft. The compressed limiting springs extend, pushing the connecting rods outward, causing the fixing block to slide laterally on the inner wall of the fixing hole to complete the installation. Subsequently, an internal hexagonal threaded limiting block is screwed into the threaded fixing groove to abut against the fixing block for installation. By setting a rotating shaft cantilever and a moving contact connecting rod in the split transmission structure of the operating mechanism and the rotating shaft, the rotating shaft can be fixed on the base. The rotating shaft cantilever and the moving contact connecting rod are easy to install intuitively. The rotating shaft is connected to the operating mechanism body by a pin. The operating component moves the shaft assembly and the connecting rod together, thereby pushing the main shaft assembly to move for closing and opening operations.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker transmission structure technology, specifically to a split transmission structure of operating mechanism and rotating shaft. Background Technology

[0002] As the core mechanical hub controlling the opening and closing actions of the circuit breaker, the operating mechanism shoulders the important mission of quickly cutting off the current and safeguarding the safe operation of the power system in the event of a sudden circuit fault. This mechanism ingeniously integrates key components such as the operating handle, triggering device, and drive mechanism, flexibly utilizing electromagnetic energy, spring potential energy, compressed air kinetic energy, or hydraulic energy to ensure reliable interruption of fault current while ensuring smooth and orderly switching of normal circuits. Currently, the operating mechanism cantilever and contact system linkage of circuit breakers are difficult to install, resulting in inconvenient and unsafe operation. The operating mechanism and rotating shaft are integrated, making it difficult to ensure concentricity of the fixed rotating shaft support, causing shaft deformation, increasing friction, and reducing the lifespan of the operating mechanism. Furthermore, the rotating shaft cantilever has only one fulcrum, resulting in low strength and unbalanced force distribution, further complicating operation. Additionally, the rotating shaft's swing arm is fixedly installed; when the swing arm wears out, replacing it requires disassembling and replacing the entire rotating shaft, which is time-consuming and labor-intensive.

[0003] Therefore, a separate operating mechanism and a rotating shaft transmission structure are needed to improve the above problems. Summary of the Invention

[0004] To address the problems of difficult installation, inconvenient operation, and safety issues associated with the current circuit breaker operating mechanism cantilever and contact system linkage when using a separate transmission structure for the operating mechanism and rotating shaft, where the operating mechanism and rotating shaft are integrated, the fixed rotating shaft support is not concentric, leading to shaft deformation, increased friction, and reduced operating mechanism lifespan. Furthermore, the rotating shaft cantilever has only one fulcrum, resulting in low strength, unbalanced force distribution, and reduced operational efficiency. This invention provides a separate transmission structure for the operating mechanism and rotating shaft to solve these problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A split transmission structure for the operating mechanism and the rotating shaft includes a circuit breaker base. Fixed plates are symmetrically arranged on opposite outer walls of the circuit breaker base, and a main shaft assembly is rotatably connected to opposite inner walls of the fixed plates. The main shaft assembly facilitates the replacement of the shaft and the swing arm. The circuit breaker base has symmetrical fixed brackets on its base surface. The fixed brackets support the main shaft assembly. One end of the main shaft assembly is connected to an operating component, which is fixedly installed on the outer wall of the circuit breaker base via a side plate.

[0006] As a preferred embodiment of the present invention, the spindle assembly includes a plug-in block, one end of which is inserted into a fixing plate and extends to the port of the fixing plate to be fixedly connected to a spindle component, and the spindle component is threadedly fixed to the outer wall of the plug-in block by bolts.

[0007] As a preferred embodiment of the present invention, the connection between the spindle and the fixing plate is a rotatable connection, a fixing hole is provided on the side wall of the spindle, and a threaded fixing groove is provided directly above the fixing hole and on the outer wall of the spindle.

[0008] As a preferred embodiment of the present invention, the connection between the threaded fixing groove and the fixing hole is a connected structure, an internal hexagonal thread limiting block is threadedly connected to the inner wall of the threaded fixing groove, and a connecting rod is inserted and pulled into the inner wall of the fixing hole.

[0009] As a preferred embodiment of the present invention, a fixing block is fixedly installed at one end of the connecting rod, and the internal hexagonal thread limiting block abuts against the fixing block for fixed installation. A limiting groove is opened at the other end of the connecting rod. A coupling is slidably connected to one side of the main shaft and on the outer wall of the connecting rod, and an installation block is fixedly installed on the inner wall of the coupling.

[0010] As a preferred embodiment of the present invention, insertion and removal limiting rods are fixedly installed on the opposite outer walls of the mounting blocks, wherein the insertion and removal limiting rods are located in the inner cavity of the coupling, one end of the insertion and removal limiting rods is slidably connected to the inner wall of the limiting groove, and the cross-section of the insertion and removal limiting rods is a hexagonal shape. Limiting springs are symmetrically arranged on the outer wall of the mounting blocks, and one end of the limiting springs is fixedly connected to the coupling.

[0011] As a preferred embodiment of the present invention, a contact cantilever is provided on the outer wall of the coupling, wherein one end of the contact cantilever is connected to a moving contact connecting rod, and one end of the moving contact connecting rod is fixedly installed on the inner wall of the circuit breaker base.

[0012] As a preferred embodiment of the present invention, an operating cantilever is fixedly installed on one side of the contact cantilever and on the outer wall of the coupling. Two sets of operating cantilever are provided and are respectively located on the outer wall of the coupling. A connecting sleeve is fixedly installed on the opposing inner wall of the operating cantilever. A shaft assembly is fixedly installed on the outer wall of the connecting sleeve. An operating component is connected to the outer wall of the shaft assembly. The connection between the fixed bracket and the main shaft is a rotatable connection.

[0013] Compared with the prior art, the present invention, by setting a rotating shaft cantilever and a moving contact connecting rod in the split transmission structure of the operating mechanism and the rotating shaft, can fix the rotating shaft on the base. The rotating shaft cantilever and the moving contact connecting rod are easy to install intuitively. The rotating shaft is connected to the operating mechanism body with a pin. By installing the main shaft assembly on the outer wall of the circuit breaker base, one end of the main shaft and coupling is fixed with the moving contact connecting rod through the contact cantilever, which is easy to install intuitively. At the same time, the other end of the main shaft and coupling is connected to the operating body of the operating mechanism through the operating cantilever with a connecting sleeve rod and a pin. This helps to solve the problem of difficult installation of the operating mechanism cantilever and the contact system connecting rod of the circuit breaker.

[0014] This invention achieves shaft support by incorporating a shaft cantilever in a separate transmission structure for the operating mechanism and the rotating shaft, thereby increasing the shaft's support strength. The main shaft assembly is mounted on the outer wall of the circuit breaker base and connected to the moving contact rod, and is secured by fixing plates on both sides of the circuit breaker base. The operating component is then connected to the shaft sleeve via an operating cantilever, which passes through the shaft assembly of the operating component. The operating component moves the shaft assembly and the shaft sleeve together, thereby driving the main shaft assembly to perform closing and opening operations. Because the outer wall of the main shaft assembly has multiple sets of operating cantilever components, the support strength is increased, thus addressing the problems of inconvenient and unsafe operation. Furthermore, the integrated operation mechanism and rotating shaft make it difficult for the fixed shaft support to be concentric, causing shaft deformation, increasing friction, and reducing the lifespan of the operating mechanism. Additionally, the rotating shaft cantilever has only one fulcrum, resulting in low strength, unbalanced force, and reduced operational efficiency.

[0015] This invention facilitates the replacement of the shaft and swing arm by setting a main shaft assembly in the split transmission structure of the operating mechanism and the rotating shaft. The process involves inserting plug-in blocks into the ports of the two side fixing plates, then inserting and removing one end of the main shaft component with the plug-in blocks. A gap is left between the two main shaft components. After the swing arm is replaced, the connecting rods on both sides of the coupling are pinched, causing them to move inwards along the inner wall of the coupling, and then slide along the limiting groove on the outer wall of the plug-in limiting block. During this process, the connecting rods compress the limiting springs. The coupling is then placed on one side of the main shaft component, and the connecting rods are released. The compressed limiting springs extend, pushing the connecting rods outwards, causing the fixing block to slide laterally along the inner wall of the fixing hole to complete the installation. Finally, an internal hexagonal threaded limiting block is screwed into the inner wall of the threaded fixing groove, with its end abutting against the fixing block for installation. This effectively solves the problem that the swing arm of the rotating shaft is fixedly installed, and when the swing arm wears out, replacing it requires disassembling the entire rotating shaft, which is time-consuming and labor-intensive. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the circuit breaker base structure of the present invention; Figure 3 This is a schematic diagram of the operating component structure of the present invention; Figure 4 This is a schematic diagram of the coupling sleeve structure of the present invention; Figure 5 This is a schematic diagram of the spindle assembly structure of the present invention; Figure 6 This is a schematic diagram illustrating the structural cross-section of the main shaft component of the present invention; Figure 7 This is a schematic diagram illustrating the structural cross-section of the coupling component of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point A; Figure 9 For the present invention Figure 7 Enlarged schematic diagram of the structure at point B.

[0017] In the diagram: 1. Circuit breaker base; 2. Fixing plate; 3. Main shaft assembly; 301. Insertion block; 302. Main shaft component; 303. Bolt; 304. Fixing hole; 305. Threaded fixing groove; 306. Internal hexagon thread limit block; 307. Coupling rod; 308. Fixing block; 309. Limit groove; 310. Coupling component; 311. Mounting block; 312. Insertion limit rod; 313. Limit spring; 4. Fixing bracket; 5. Operating component; 6. Side plate; 7. Contact cantilever component; 8. Moving contact connecting rod; 9. Operating cantilever component; 10. Coupling sleeve rod; 11. Shaft assembly. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example: Please refer to Figure 1-9 The operating mechanism and the rotating shaft are separated transmission structures shown, including a circuit breaker base 1. Fixed plates 2 are symmetrically arranged on opposite outer walls of the circuit breaker base 1. A main shaft assembly 3 is rotatably connected to opposite inner walls of the fixed plates 2. The main shaft assembly 3 facilitates the replacement of the shaft and the swing arm. Fixed brackets 4 are symmetrically arranged on the base surface of the circuit breaker base 1. The fixed brackets 4 support the main shaft assembly 3. One end of the main shaft assembly 3 is connected to the operating component 5, and the operating component 5 is fixedly installed on the outer wall of the circuit breaker base 1 via the side plate 6.

[0020] In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 The spindle assembly 3 includes a plug-in block 301. One end of the plug-in block 301 is inserted into the fixing plate 2 and extends to the port of the fixing plate 2 to be fixedly connected to the spindle component 302. The outer wall of the plug-in block 301 is threadedly fixed to the spindle component 302 by bolts 303. The connection between the spindle component 302 and the fixing plate 2 is a rotatable connection. A fixing hole 304 is provided on the side wall of the spindle component 302. A threaded fixing groove 305 is provided directly above the fixing hole 304 and on the outer wall of the spindle component 302. The connection between the threaded fixing groove 305 and the fixing hole 304 is a communicating structure. An internal hexagonal thread limit block 306 is threadedly connected to the inner wall of the threaded fixing groove 305. A connecting rod 307 is plugged into the inner wall of the fixing hole 304. In this embodiment, specific references Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 A fixing block 308 is fixedly installed at one end of the connecting rod 307. An internal hexagon threaded limit block 306 abuts against the fixing block 308 for fixed installation. A limit groove 309 is opened at the other end of the connecting rod 307. A coupling 310 is slidably connected to one side of the main shaft 302 and on the outer wall of the connecting rod 307. An installation block 311 is fixedly installed on the inner wall of the coupling 310. An insertion limit rod 312 is fixedly installed on the opposite outer wall of the installation block 311. The insertion limit rod 312 is located in the inner cavity of the coupling 310. One end of the insertion limit rod 312 is slidably connected to the inner wall of the limit groove 309. The cross-section of the insertion limit rod 312 is a hexagonal shape. Limit springs 313 are symmetrically arranged on the outer wall of the installation block 311. One end of the limit spring 313 is fixedly connected to the coupling 310.

[0021] Based on the aforementioned structural features and connection relationships, the connecting rods 307 on both sides of the coupling 310 are pinched, causing the connecting rods 307 to move inward on the inner wall of the coupling 310. This allows the connecting rods 307 to slide on the outer wall of the insertion / removal limiting rod 312 via the limiting groove 309. Simultaneously, the connecting rods 307 compress the limiting spring 313. Then, the coupling 310 is placed on one side of the main shaft 302. When the connecting rods 307 are released, the compressed limiting spring 313 extends, causing one end of the limiting spring 313 to push the connecting rod 307 outward. This causes the connecting rod 307 to drive the fixing block 308 to slide laterally on the inner wall of the fixing hole 304 for installation. Subsequently, the internal hexagonal thread limiting block 306 moves downward on the inner wall of the threaded fixing groove 305, causing one end of the internal hexagonal thread limiting block 306 to abut against the fixing block 308 for fixed installation.

[0022] Based on the above structural features and connection relationships, a fixed shaft is provided on the inner wall of the operating component 5, and a resistance clamp is fixedly installed on the inner wall opposite to the fixed shaft. One end of the resistance clamp is fitted with a plastic sleeve, and the resistance clamp works with the plastic sleeve to prevent the swing arm from slipping. The outer wall of the coupling 310 is provided with a contact cantilever 7, one end of which is connected to a moving contact link 8. One end of the moving contact link 8 is fixedly installed on the inner wall of the circuit breaker base 1. An operating cantilever 9 is fixedly installed on one side of the contact cantilever 7 and on the outer wall of the coupling 310. Two sets of operating cantilever 9 are provided and are respectively located on the outer wall of the coupling 310. A connecting sleeve 10 is fixedly installed on the inner wall opposite to the operating cantilever 9. A shaft assembly 11 is fixedly installed on the outer wall of the connecting sleeve 10. An operating component 5 is connected to the outer wall of the shaft assembly 11. The connection between the fixed bracket 4 and the main shaft 302 is a rotatable connection.

[0023] In this scheme, the operating mechanism and the shaft are separated into a transmission structure. When working, the main shaft assembly 3 is installed on the outer wall of the circuit breaker base 1, so that one end of the main shaft 302 and the coupling 310 is fixedly installed with the moving contact connecting rod 8 through the contact cantilever 7, which is easy to install intuitively. At the same time, the other end of the main shaft 302 and the coupling 310 is connected to the body of the operating component 5 through the operating cantilever 9 with a connecting sleeve rod 10 by a pin. This helps to solve the problem of difficult installation of the cantilever of the operating mechanism and the connecting rod of the contact system of the circuit breaker. The main shaft assembly 3 is mounted on the outer wall of the circuit breaker base 1 and connected to the moving contact connecting rod 8. It is fixed by the fixing plates 2 on both sides of the circuit breaker base 1. Then, the operating member 5 is connected to the shaft sleeve 10 through the shaft kit 11 of the operating member 5 by the operating cantilever member 9. The operating member 5 moves the shaft kit 11 and the shaft sleeve 10 together, thereby pushing the main shaft assembly 3 to move to perform closing and opening operations. Since the outer wall of the main shaft member 302 of the main shaft assembly 3 is provided with multiple sets of operating cantilever members 9, the support strength of multiple cantilever members is increased, which helps to solve the problems of inconvenient operation and safety. The operating mechanism and the rotating shaft are integrated, which makes it difficult for the fixed rotating shaft bracket to be concentric, causing the rotating shaft to deform and increasing the friction of the rotating shaft, thereby reducing the life of the operating mechanism. In addition, the rotating shaft cantilever has only one fulcrum, which has low strength and unbalanced force, reducing the operation. By inserting the plug-in block 301 into the port of the fixing plate 2, and then plugging and unplugging one end of the spindle 302 and the plug-in block 301, the plug-in block 301 and the spindle 302 are fixedly installed using bolts 303. Simultaneously, the plug-in block 301 and the spindle 302 are installed on both sides of the fixing plate 2. Because there is a gap between the two spindles 302, the swing arm can be replaced. After the swing arm is replaced, the connecting rods 307 on both sides of the coupling 310 are pinched, causing the connecting rods 307 to move inward on the inner wall of the coupling 310. This allows the connecting rods 307 to slide through the limiting groove 309 on the outer wall of the plug-in limiting rod 312, while simultaneously pressing the limiting spring 313. The coupling 310 is then placed on one side of the main shaft 302. When the coupling rod 307 is released, the compressed limiting spring 313 extends, causing one end of the limiting spring 313 to push the coupling rod 307 outward. This causes the coupling rod 307 to slide laterally on the inner wall of the fixing hole 304 for installation. Then, the internal hexagonal thread limiting block 306 moves downward on the inner wall of the threaded fixing groove 305, causing one end of the internal hexagonal thread limiting block 306 to abut against the fixing block 308 for fixed installation. This helps to solve the problem that the swing arm of the rotating shaft is fixedly installed, and when the swing arm is worn, if the swing arm needs to be replaced, the entire rotating shaft needs to be disassembled and replaced, which is time-consuming and laborious.

[0024] The circuit breaker base 1 and the operating element 5 used in this invention are both existing known electrical devices and can be purchased and used directly on the market. Their structure, circuit and control principle are all existing known technologies. Therefore, the structure, circuit and control principle of the circuit breaker base 1 and the operating element 5 will not be described in detail here.

[0025] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0026] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split-type transmission structure for the operating mechanism and the rotating shaft, comprising a circuit breaker base (1), characterized in that: The circuit breaker base (1) is symmetrically provided with fixing plates (2) on opposite outer walls, and the fixing plates (2) are rotatably connected with main shaft assembly (3) on opposite inner walls. The main shaft assembly (3) facilitates the replacement of the shaft and the swing arm. Fixed brackets (4) are symmetrically arranged on the base surface of the circuit breaker base (1). The fixed brackets (4) support the spindle assembly (3). One end of the spindle assembly (3) is connected to an operating component (5), and the operating component (5) is fixedly installed on the outer wall of the circuit breaker base (1) via a side plate (6).

2. The split transmission structure of the operating mechanism and the rotating shaft according to claim 1, characterized in that: The spindle assembly (3) includes a plug-in block (301), one end of which is inserted into the fixing plate (2) and extends to the port of the fixing plate (2) where a spindle component (302) is fixedly connected. The outer wall of the plug-in block (301) is threaded to the spindle component (302) by bolts (303).

3. The split transmission structure of the operating mechanism and the rotating shaft according to claim 2, characterized in that: The connection between the main spindle (302) and the fixing plate (2) is a rotatable connection. A fixing hole (304) is provided on the side wall of the main spindle (302). A threaded fixing groove (305) is provided directly above the fixing hole (304) and on the outer wall of the main spindle (302).

4. The split transmission structure of the operating mechanism and the rotating shaft according to claim 3, characterized in that: The connection between the threaded fixing groove (305) and the fixing hole (304) is a connected structure. The inner wall of the threaded fixing groove (305) is threaded with an internal hexagonal thread limit block (306), and the inner wall of the fixing hole (304) is plugged in and pulled with a connecting rod (307).

5. The split transmission structure of the operating mechanism and the rotating shaft according to claim 4, characterized in that: A fixing block (308) is fixedly installed at one end of the connecting rod (307), and the internal hexagonal thread limit block (306) abuts against the fixing block (308) for fixed installation. A limit groove (309) is opened at the other end of the connecting rod (307). A coupling (310) is slidably connected to one side of the main shaft (302) and on the outer wall of the connecting rod (307). An installation block (311) is fixedly installed on the inner wall of the coupling (310).

6. The split transmission structure of the operating mechanism and the rotating shaft according to claim 5, characterized in that: A plug-in limiting rod (312) is fixedly installed on the opposite outer wall of the mounting block (311). The plug-in limiting rod (312) is located in the inner cavity of the coupling (310). One end of the plug-in limiting rod (312) is slidably connected to the inner wall of the limiting groove (309). The cross-section of the plug-in limiting rod (312) is a hexagonal shape. Limiting springs (313) are symmetrically arranged on the outer wall of the mounting block (311). One end of the limiting spring (313) is fixedly connected to the coupling (310).

7. The split transmission structure of the operating mechanism and the rotating shaft according to claim 5, characterized in that: The outer wall of the coupling (310) is provided with a contact cantilever (7), one end of which is connected to a moving contact link (8), and one end of the moving contact link (8) is fixedly installed on the inner wall of the circuit breaker base (1).

8. The split transmission structure of the operating mechanism and the rotating shaft according to claim 7, characterized in that: An operating cantilever (9) is fixedly installed on one side of the contact cantilever (7) and on the outer wall of the coupling (310). The operating cantilever (9) has two sets and is located on the outer wall of the coupling (310). A connecting sleeve (10) is fixedly installed on the inner wall opposite to the operating cantilever (9). A shaft assembly (11) is fixedly installed on the outer wall of the connecting sleeve (10). An operating component (5) is connected to the outer wall of the shaft assembly (11). The connection between the fixed bracket (4) and the main shaft (302) is a rotatable connection.

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