Circuit breaker synchronous driving operation mechanism

Abstract

The utility model provides a circuit breaker synchronous driving operation mechanism which comprises a mechanism support, a main shaft arranged on the mechanism support, a ball bearing sleeved on the main shaft, a crank arm arranged on the main shaft, a contact arranged at the tail end of the crank arm and matched with a feeler lever, a reinforcing connecting rod arranged on the mechanism support, and a synchronous spring connected with the feeler lever. The ball bearing is used for supporting the main shaft, friction and abrasion are reduced, the service life of the mechanism is prolonged, the reliability of the mechanism is improved, the pendulum bob on the pendulum bob shaft and the V-shaped antennas on the outer surface of the pendulum bob shaft are arranged, balance and stability of the mechanism in the operation process can be kept, and the service life of the mechanism is prolonged. And errors and faults caused by vibration or imbalance are reduced. Through cooperative work of the main shaft, the crank arm, the contact, the feeler lever, the synchronous spring, the synchronous connecting rod and other parts, the operation synchronism of the circuit breaker is realized, accurate opening and closing of a circuit are ensured, and the stability and reliability of a power system are improved.

Description

Technical Field

[0001] The utility model relates to the field of drive operating mechanisms, in particular to a synchronous drive operating mechanism for a circuit breaker. Background Art

[0002] In the power system, the circuit breaker is an important protection and control device, which is used to quickly cut off the circuit when a circuit fails or needs maintenance to protect the safety of equipment and personnel. The operating mechanism proposed in the Chinese utility model patent application number: CN202022570554.9 includes a housing, a closing transmission mechanism and an opening transmission mechanism; the closing transmission mechanism includes a closing half shaft and a closing lever; the opening transmission mechanism includes an opening half shaft and an opening lever.

[0003] However, there are some shortcomings in the use of the existing drive operating mechanism, which still need to be improved. The traditional circuit breaker operating mechanism has problems in synchronization, and it is difficult to achieve accurate synchronous opening and closing operations, which may lead to the failure to cut off the circuit in time and effectively when the circuit fails, affecting the stability and reliability of the power system. In terms of reliability, some operating mechanism components are susceptible to wear and fatigue, and have a short service life, which increases the maintenance cost and downtime of the equipment. In terms of balance and stability, some operating mechanisms are prone to vibration and imbalance during operation, which not only affects the accuracy of operation, but also may cause damage to the equipment. At the same time, the flexibility of the traditional operating mechanism is also insufficient, and it is difficult to flexibly adjust according to different working environments and electrical parameters, which limits its scope of application. Finally, the structure of the existing operating mechanism is often more complicated, and maintenance and overhaul work is more difficult, which increases the difficulty and time cost of the maintenance personnel. Therefore, we make improvements to this and propose a circuit breaker synchronous drive operating mechanism. Utility Model Content

[0004] The purpose of the utility model is to address the problems raised by the existing background technology. In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions: a synchronous drive operating mechanism for a circuit breaker, including a mechanism bracket, a main shaft is arranged on the mechanism bracket, a ball bearing is sleeved on the main shaft, a crank arm is arranged on the main shaft, a contact is arranged at the end of the crank arm, the contact is matched with a contact rod, a reinforcement connecting rod is arranged on the mechanism bracket, the contact rod is connected with a synchronous spring, the other end of the synchronous spring is connected with a synchronous connecting rod, a main spring is arranged on the inner side of the mechanism bracket, an electromagnet is arranged on the side of the mechanism bracket, the electromagnet is matched with a permanent magnet, and the permanent magnet is matched with a semicircular rod.

[0005] As a preferred technical solution of the utility model, the bottom of the main spring is installed on the main spring movable connecting seat.

[0006] As a preferred technical solution of the utility model, the main spring movable connection seat cooperates with the guide sleeve through a rotating shaft, and the guide sleeve cooperates with the guide shaft.

[0007] As a preferred technical solution of the utility model, a paddle shaft is arranged on the rear side of the mechanism bracket, and a paddle is arranged on the paddle shaft.

[0008] As a preferred technical solution of the utility model, it also includes a pendulum shaft, on which a pendulum is arranged.

[0009] As a preferred technical solution of the utility model, the outer surface of the pendulum shaft is provided with a V-shaped feeler.

[0010] As a preferred technical solution of the utility model, one end of the V-shaped feeler cooperates with the synchronous connecting rod, and the other end of the V-shaped feeler cooperates with the synchronous rotating protrusion.

[0011] As a preferred technical solution of the utility model, the electromagnet is a disc structure and is connected to the mechanism bracket through a shaft.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: in the scheme of the utility model: through the coordinated work of components such as the main shaft, the crank arm, the contact, the touch rod, the synchronization spring and the synchronization connecting rod, the synchronization of the circuit breaker operation is achieved, the accurate opening and closing of the circuit is ensured, and the stability and reliability of the power system are improved.

[0013] By using ball bearings to support the main shaft, friction and wear are reduced, and the service life and reliability of the mechanism are improved. At the same time, the reasonable design and coordination of the main spring, electromagnet, permanent magnet and other components make the operation of the operating mechanism more stable and reliable, reducing the probability of failure.

[0014] The main spring movable connection seat cooperates with the guide sleeve through the rotating shaft, and the guide sleeve cooperates with the guide shaft, which ensures the accurate release and transmission of the main spring energy, thereby realizing accurate control of the circuit breaker operation.

[0015] The pendulum on the pendulum shaft and the V-shaped feeler on its outer surface help to maintain the balance and stability of the mechanism during operation, reducing errors and failures caused by vibration or imbalance. The electromagnet is a disc structure and is connected to the mechanism bracket through a shaft, making the rotation of the electromagnet more flexible, and can more accurately control the movement of the permanent magnet and the semicircular rod, thereby achieving flexible control of the circuit breaker operation.

[0016] The operating mechanism has a compact structure, and the components are reasonably coordinated, which can adapt to different working environments and electrical parameter requirements, and has strong versatility and adaptability. The structure of the mechanism is relatively simple, and the components are easy to disassemble and install, which facilitates daily maintenance and overhaul work and reduces maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure provided by the utility model;

[0018] Figure 2 A schematic diagram of the structure of the paddle shaft provided by the utility model;

[0019] Figure 3 A schematic diagram of the main shaft structure provided by the utility model;

[0020] Figure 4 A schematic diagram of the crank arm structure provided by the utility model;

[0021] Figure 5 The utility model is provided with a schematic diagram of a top view structure.

[0022] Indicated in the figure:

[0023] 1. Mechanism bracket; 2. Main shaft; 201. Ball bearing; 3. Crank arm; 4. Contact; 5. Contact rod; 6. Reinforced connecting rod; 7. Synchronous spring; 701. Synchronous connecting rod; 8. Main spring; 801. Main spring movable connecting seat; 9. Guide shaft; 901. Guide sleeve; 10. Electromagnet; 11. Permanent magnet; 12. Semicircular stick; 13. Pick; 14. Pick shaft; 15. Pendulum; 16. Pendulum shaft; 17. V-shaped feeler; 18. Synchronous rotating protrusion. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0025] Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model for which protection is sought, but merely represents some embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. It should be noted that the embodiments of the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] Example 1: Please refer to Figure 1-Figure 5 A synchronous drive operating mechanism for a circuit breaker includes a mechanism bracket 1, a main shaft 2 is arranged on the mechanism bracket 1, the main shaft 2 is sleeved with a ball bearing 201, a crank arm 3 is arranged on the main shaft 2, a contact 4 is arranged at the end of the crank arm 3, the contact 4 cooperates with a touch rod 5, the touch rod 5 is connected to a synchronous spring 7, a reinforced connecting rod 6 is arranged on the mechanism bracket 1, the other end of the synchronous spring 7 is connected to a synchronous connecting rod 701, a main spring 8 is arranged on the inner side of the mechanism bracket 1, and an electromagnet 10 is arranged on the side of the mechanism bracket 1, the electromagnet 10 cooperates with a permanent magnet 11, and the permanent magnet 11 cooperates with a semicircular stick 12.

[0027] The bottom of the main spring 8 is mounted on the main spring movable connection seat 801. The main spring movable connection seat 801 is matched with the guide sleeve 901 through the rotating shaft, and the guide sleeve 901 is matched with the guide shaft 9. A paddle shaft 14 is arranged at the rear side of the mechanism bracket 1, and a paddle 13 is arranged on the paddle shaft 14.

[0028] A pendulum 15 is disposed on the pendulum shaft 16. A V-shaped feeler 17 is disposed on the outer surface of the pendulum shaft 16. One end of the V-shaped feeler 17 cooperates with the synchronous connecting rod 701, and the other end of the V-shaped feeler 17 cooperates with the synchronous rotation protrusion 18. The electromagnet 10 is a disc structure and is connected to the mechanism bracket 1 through a shaft.

[0029] Working principle of the synchronous drive operating mechanism of the circuit breaker: When the circuit breaker needs to be opened and closed, the electromagnet 10 is energized to generate magnetic force. The electromagnet 10 cooperates with the permanent magnet 11, and the movement of the permanent magnet 11 drives the semicircular rod 12 to move. At the same time, the energy stored in the main spring 8 is released to push the main spring movable connection seat 801 to move. The main spring movable connection seat 801 cooperates with the guide sleeve 901 through the rotating shaft, and the guide sleeve 901 moves along the guide shaft 9 to ensure the accuracy and stability of the movement. The main shaft 2 on the mechanism bracket 1 is smoothly rotated through the ball bearing 201. The crank arm 3 on the main shaft 2 rotates accordingly, and the contact 4 at the end of the crank arm 3 cooperates with the contact rod 5 to realize the connection or disconnection of the circuit.

[0030] The contact rod 5 is connected to the synchronization spring 7, and the other end of the synchronization spring 7 is connected to the synchronization link 701. When the contact 4 moves, the synchronization spring 7 is stretched or compressed through the contact rod 5, thereby driving the synchronization link 701 to move. On the rear side of the mechanism bracket 1, the paddle 13 on the paddle shaft 14 plays a role in auxiliary control. In addition, the pendulum 15 on the pendulum shaft 16 plays a role in balancing and stabilizing during the movement. One end of the V-shaped feeler 17 on the outer surface of the pendulum shaft 16 cooperates with the synchronization link 701, and the other end cooperates with the synchronization rotation protrusion 18 to realize the transmission and control of the synchronous motion.

[0031] When the electromagnet 10 is a disc structure and connected to the mechanism bracket 1 through a shaft, the rotation of the electromagnet 10 can more flexibly control the action of the entire operating mechanism. The circuit breaker synchronous drive operating mechanism realizes accurate and reliable opening and closing operations of the circuit breaker through the coordinated work of various components, ensuring the safe operation of the circuit.

[0032] Specific working process of synchronous drive operating mechanism of circuit breaker: Closing operation: electromagnet 10 is energized to generate magnetic force and attract permanent magnet 11. The movement of permanent magnet 11 drives semicircular rod 12 to move, preparing for subsequent operation. The energy stored in main spring 8 is released to push main spring movable connection seat 801 to move. Main spring movable connection seat 801 drives guide sleeve 901 to move along guide shaft 9 through rotating shaft to ensure the direction and stability of movement. The thrust of main spring 8 is transmitted to main shaft 2 through mechanism bracket 1. Main shaft 2 rotates smoothly under the support of ball bearing 201, driving crank arm 3 to rotate. Contact 4 at the end of crank arm 3 contacts with touch rod 5 and pushes touch rod 5 to move. The movement of touch rod 5 stretches synchronous spring 7, and the other end of synchronous spring 7 drives synchronous connecting rod 701 to move. At the same time, pendulum 15 on pendulum shaft 16 keeps balance under the action of gravity to ensure the stability of the whole mechanism. One end of the V-shaped feeler 17 on the outer surface of the pendulum shaft 16 moves with the movement of the synchronous link 701, and the other end cooperates with the synchronous rotation protrusion 18 to achieve synchronous action. The paddle 13 on the paddle shaft 14 on the rear side of the mechanism bracket 1 plays an auxiliary control role at an appropriate time to ensure the smooth completion of the closing operation.

[0033] Opening operation: The electromagnet 10 is powered off, the magnetic force disappears, and the permanent magnet 11 and the semicircular rod 12 return to their initial positions under the reset spring. The main spring 8 is compressed again to store energy. The main shaft 2 rotates in the opposite direction driven by other components, and the crank arm 3 rotates accordingly, so that the contact 4 is separated from the contact rod 5. The contact rod 5 is reset under the action of the synchronization spring 7, and the synchronization spring 7 drives the synchronization link 701 back to the initial position. The V-shaped feeler 17 also returns to the initial position with the movement of the synchronization link 701, and the synchronous rotation protrusion 18 also returns to the initial state accordingly. The paddle 13 on the paddle shaft 14 also plays an auxiliary control role at an appropriate time to ensure the smooth completion of the opening operation.

[0034] Embodiment 2: A synchronous drive operating mechanism for a circuit breaker, which is applied in a circuit breaker with a rated voltage of 380V and a rated current of 100A. When an overload or short circuit occurs in the circuit, the control system sends a signal to the electromagnet 10, and the electromagnet 10 is energized to generate magnetic force, attracting the permanent magnet 11. The permanent magnet 11 drives the semicircular rod 12 to move, triggering the main spring 8 to release energy.

[0035] The main spring 8 transmits force to the mechanism bracket 1 through the cooperation of the main spring movable connecting seat 801, the guide sleeve 901 and the guide shaft 9, thereby driving the main shaft 2 to rotate.

[0036] The crank arm 3 on the main shaft 2 rotates accordingly, so that the contact 4 contacts the feeler rod 5 to close the circuit. In this process, the feeler rod 5 stretches the synchronization spring 7, and the synchronization spring 7 drives other related parts to move through the synchronization connecting rod 701 to ensure the synchronization of the entire operation.

[0037] When the circuit breaker needs to be opened, the electromagnet 10 is de-energized, the main spring 8 is compressed again, the main shaft 2 rotates in the opposite direction, the contact 4 is separated from the contact rod 5, and the circuit is disconnected.

[0038] Embodiment 3: A synchronous drive operating mechanism for a circuit breaker, which is used in a circuit breaker with a rated voltage of 660V and a rated current of 200A. During normal operation, the circuit breaker is in a closed state. When a circuit abnormality is detected, the control system energizes the electromagnet 10 to attract the permanent magnet 11, thereby driving the semicircular rod 12 to move and start the opening operation.

[0039] The energy released by the main spring 8 pushes the mechanism bracket 1 to move, the main shaft 2 rotates smoothly through the ball bearing 201, and the crank arm 3 drives the contact 4 to separate from the touch rod 5 to achieve the opening of the gate. At the same time, the touch rod 5 is reset under the action of the synchronization spring 7, and the synchronization spring 7 drives the relevant components back to the initial position through the synchronization connecting rod 701 to prepare for the next operation.

[0040] During the closing operation, the electromagnet 10 is powered off, and the main spring 8 is compressed to store energy. When the circuit breaker needs to be closed, the electromagnet 10 is powered on again, triggering the main spring 8 to release energy, pushing the main shaft 2 to rotate, so that the crank arm 3 drives the contact 4 to contact the feeler rod 5, completing the closing operation.

[0041] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A circuit breaker synchronous drive operating mechanism, comprising a mechanism support (1), wherein a main shaft (2) is arranged on the mechanism support (1), characterized in that: The main shaft (2) is sleeved with a ball bearing (201), the main shaft (2) is provided with a crank arm (3), the end of the crank arm (3) is provided with a contact (4), the contact (4) cooperates with a contact rod (5), the mechanism support (1) is provided with a reinforcement connecting rod (6), the contact rod (5) is connected to a synchronization spring (7), the other end of the synchronization spring (7) is connected to a synchronization connecting rod (701), a main spring (8) is provided on the inner side of the mechanism support (1), and an electromagnet (10) is provided on the side of the mechanism support (1), the electromagnet (10) cooperates with a permanent magnet (11), and the permanent magnet (11) cooperates with a semicircular rod (12).

2. A circuit breaker synchronous drive operating mechanism according to claim 1, characterized in that: The bottom of the main spring (8) is mounted on the main spring movable connection seat (801).

3. A circuit breaker synchronous drive operating mechanism according to claim 2, characterized in that: The main spring movable connection seat (801) cooperates with the guide sleeve (901) via a rotating shaft, and the guide sleeve (901) cooperates with the guide shaft (9).

4. A circuit breaker synchronous drive operating mechanism according to claim 1, characterized in that: A paddle shaft (14) is arranged on the rear side of the mechanism bracket (1), and a paddle (13) is arranged on the paddle shaft (14).

5. A circuit breaker synchronous drive operating mechanism according to claim 1, characterized in that: It also comprises a pendulum shaft (16), on which a pendulum (15) is arranged.

6. A circuit breaker synchronous drive operating mechanism according to claim 5, characterized in that: The outer surface of the pendulum shaft (16) is provided with a V-shaped feeler (17).

7. A circuit breaker synchronous drive operating mechanism according to claim 6, characterized in that: One end of the V-shaped feeler (17) cooperates with the synchronous connecting rod (701), and the other end of the V-shaped feeler (17) cooperates with the synchronous rotating protrusion (18).

8. A circuit breaker synchronous drive operating mechanism according to claim 1, characterized in that: The electromagnet (10) is a disc structure and is connected to the mechanism support (1) via a shaft.

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