Indoor high-voltage vacuum circuit breaker main shaft
By installing a closing retaining arm, a rotatable zip roller fixing plate and zip roller on the spindle of the indoor high-voltage vacuum circuit breaker, the problem of excessive volume of the traditional spindle is solved, and a smaller volume and a more stable structure is achieved.
Patent Information
- Application Number
- CN202422195246.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The traditional indoor high-voltage vacuum circuit breaker spindle has a large overall volume due to the fixed structure of the closing and retaining the crimp arm, which cannot meet the needs of small modularity.
The closing retaining arms are provided on the spindle, and the closing retaining is achieved through the rotatable zipper roller fixing plate and zipper roller, shortening the spacing between the zipper roller fixing plate and zipper roller fixing plate and zipper roller, thereby reducing the mechanism volume.
Through this design, the volume reduction and structural stability of the spindle of the indoor high-voltage vacuum circuit breaker is achieved, meeting the needs of small-scale modularity.
Smart Images
Figure CN223023142U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of power control equipment, and particularly relates to a main shaft of an indoor high-voltage vacuum circuit breaker. Background Art
[0002] The main shaft of an indoor high-voltage vacuum circuit breaker is a high-voltage circuit breaker, which is characterized by using high vacuum as the arc extinguishing medium and the insulating medium of the contact gap. This circuit breaker has the advantages of small volume, light weight, being suitable for frequent operation and not requiring arc extinguishing maintenance. The structure of the traditional main shaft of an indoor high-voltage vacuum circuit breaker includes a frame and a modular energy storage operating mechanism arranged in the frame. The modular energy storage operating mechanism includes a main shaft operating unit and an energy storage operating unit arranged on the installation side plate. The traditional main shaft operating unit is as Figure 4 shown, including a main shaft, a closing holding toggle arm arranged on the main shaft, and a closing holding pawl arranged above the closing holding toggle arm, and the closing holding pawl is rotatably installed in the closing holding buckle plate. Since the convex part of the closing holding toggle arm is a fixed structure, a relatively large space for making way is required between the closing holding toggle arm and the closing holding pawl, which in turn leads to an increase in the overall volume of the main shaft of the indoor high-voltage vacuum circuit breaker and cannot meet the needs of small modularization. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a main shaft of an indoor high-voltage vacuum circuit breaker that can make the volume of the main shaft of the indoor high-voltage vacuum circuit breaker smaller and the stability better.
[0004] To solve the above problems, the technical solutions adopted by the utility model include: a main shaft body and positive toggle arms arranged at both ends of the main shaft body, and it is characterized in that: a closing holding toggle arm is arranged on the main shaft body, the closing holding toggle arm is connected with a rotatable pawl roller fixing plate through a pawl limiting pin, a pawl roller is arranged at the front end of the pawl roller fixing plate through a pawl roller pin, and a pawl fixing plate limiting pin is arranged at the rear end thereof. Both ends of the pawl fixing plate limiting pin are arranged in the limiting holes at the rear end of the closing holding toggle arm and are connected with a tension spring fixing pin at the front end of the pawl fixing plate limiting pin through a tension spring.
[0005] For the main shaft of the indoor high-voltage vacuum circuit breaker, it is characterized in that: a pawl limiting pin wheel that is in limiting cooperation with the limiting hole is arranged on the pawl fixing plate limiting pin.
[0006] For the main shaft of the indoor high-voltage vacuum circuit breaker, it is characterized in that: a closing intermediate toggle arm is further arranged on the main shaft body, and a working roller is arranged at the upper end of the closing intermediate toggle arm.
[0007] For the main shaft of the indoor high-voltage vacuum circuit breaker, it is characterized in that: an arc-shaped limiting groove is arranged on the closing intermediate toggle arm, and the rear end of the pawl roller fixing plate is in limiting cooperation with the arc-shaped limiting groove.
[0008] The main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: the outer diameter of the pawl limit pin wheel is 2 / 3 of the outer diameter of the limit hole.
[0009] The main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: a buffer toggle arm is further provided on the main shaft body, and a buffer roller is provided on the buffer toggle arm.
[0010] The main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: an auxiliary toggle arm is further provided on the main shaft body.
[0011] The main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: main shaft sleeves are provided at both ends of the main shaft body.
[0012] The advantages of the main shaft of the indoor high-voltage vacuum circuit breaker of the present utility model are as follows: by arranging a closing holding toggle arm on the main shaft, then arranging a rotatable pawl roller fixing plate on the closing holding toggle arm, and finally arranging a pawl roller on the pawl roller fixing plate. When the mechanism performs energy storage closing operation, the pawl roller fixing plate and the pawl roller press down and normally pass through the closing holding catch plate, and finally closing holding is realized. Thereby, the distance between the closing holding catch plate and the pawl roller fixing plate and the pawl roller can be shortened, so as to achieve the purpose of reducing the volume of the mechanism, and this holding mechanism has a more stable and reliable structure.
[0013] The present utility model will be further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural diagram of the main shaft of the indoor high-voltage vacuum circuit breaker of the present utility model;
[0015] Figure 2 is a partial front structural schematic diagram of the main shaft of the indoor high-voltage vacuum circuit breaker of the present utility model;
[0016] Figure 3 is a partial back structural schematic diagram of the main shaft of the indoor high-voltage vacuum circuit breaker of the present utility model;
[0017] Figure 4 is a schematic structural diagram of the main shaft of the traditional indoor high-voltage vacuum circuit breaker. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Refer to Figures 1-3As shown in the figure, the spindle body 1 of the utility model and the positive crank arms 2 arranged at both ends of the spindle body 1. A closing holding crank arm 3 is arranged on the spindle body 1, and the closing holding crank arm 3 is connected with a rotatable pawl roller fixing plate 6 through a pawl limiting pin 5. The front end of the pawl roller fixing plate 6 is provided with a pawl roller 8 through a pawl roller pin 7, and the rear end of the pawl roller fixing plate 6 is provided with a pawl fixing plate limiting pin 9. Both ends of the pawl fixing plate limiting pin 9 are arranged in the limiting holes 10 at the rear end of the closing holding crank arm 3, and the pawl fixing plate limiting pin 9 is connected with a spring fixing pin 12 at the front end of the pawl fixing plate limiting pin 9 through a tension spring 11. When the indoor high-voltage vacuum circuit breaker performs energy storage closing operation, the pawl roller fixing plate and the pawl roller can be pressed down, and then normally pass through the closing holding buckle plate at a lower installation position, and then reset under the action of the tension spring reset, so that the pawl roller abuts against the closing holding buckle plate, thereby realizing closing holding.
[0019] Preferably, a pawl limiting pin wheel 13 which is in limiting cooperation with the limiting hole 10 is arranged on the pawl fixing plate limiting pin 9. To improve the stability and durability of the positioning structure.
[0020] Preferably, a closing intermediate crank arm 4 is further arranged on the spindle body 1, and a working roller 14 is arranged at the upper end of the closing intermediate crank arm 4. The function of the closing intermediate crank arm 4 is to receive the torque of the operating mechanism and transmit the motion to the contact through components such as a connecting rod to complete the opening and closing actions of the disconnector. An arc-shaped limiting groove 15 is arranged on the closing intermediate crank arm 4, and the rear end of the pawl roller fixing plate 6 is in limiting cooperation with the arc-shaped limiting groove 15. To further improve the stability of the positioning structure.
[0021] Preferably, the outer diameter of the pawl limiting pin wheel 13 is 2 / 3 of the outer diameter of the limiting hole 10, so that the pawl roller fixing plate 6 moves up and down within a limited range to meet the best requirements.
[0022] Preferably, a buffer crank arm 16 is further arranged on the spindle body 1, and a buffer roller 17 is arranged on the buffer crank arm 16. Through the cooperation of the buffer crank arm 16 and the buffer roller 17 with the buffer oil cylinder in the indoor high-voltage vacuum circuit breaker, it is used for buffering the opening and closing actions to reduce the vibration of the mechanism.
[0023] Preferably, an auxiliary crank arm 18 is further arranged on the spindle body 1. The auxiliary crank arm 18 can be connected with the closing and opening indicating shaft in the indoor high-voltage vacuum circuit breaker through an auxiliary connecting plate, and further drive the up and down movement of the closing and opening indicating plate through the closing and opening indicating shaft, so as to facilitate the user to judge the current working state of the mechanism.
[0024] Preferably, spindle sleeves 19 are arranged at both ends of the spindle body 1. To improve the wear resistance of the spindle body 1 and the smoothness of rotation.
[0025] As mentioned above, there is no restriction in any form on the present utility model. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications to the above-disclosed structure and technical content to form equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims
1. A main shaft of an indoor high-voltage vacuum circuit breaker, comprising a main shaft body (1) and positive turning arms (2) arranged at both ends of the main shaft body (1), characterized in that: The main shaft body (1) is provided with a closing holding crank arm (3), and the closing holding crank arm (3) is connected to a rotatable latch roller fixing plate (6) via a latch limit pin (5); the front end of the latch roller fixing plate (6) is provided with a latch roller (8) via a latch roller pin (7), and the rear end is provided with a latch fixing plate limit pin (9); both ends of the latch fixing plate limit pin (9) are arranged in a limit hole (10) at the rear end of the closing holding crank arm (3), and are connected to a tension spring fixing pin (12) at the front end of the latch fixing plate limit pin (9) via a tension spring (11).
2. According to claim 1, the main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: The latch fixing plate limiting pin (9) is provided with a latch limiting pin wheel (13) that cooperates with the limiting hole (10) in limiting manner.
3. According to claim 1, the main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: A closing intermediate crank arm (4) is also provided on the main shaft body (1), and a working roller (14) is provided at the upper end of the closing intermediate crank arm (4).
4. The indoor high-voltage vacuum circuit breaker main shaft according to claim 3, characterized in that: The closing intermediate turning arm (4) is provided with an arc-shaped limiting groove (15), and the rear end of the latch roller fixing plate (6) is limitedly matched with the arc-shaped limiting groove (15).
5. According to claim 2, the main shaft of the indoor high-voltage vacuum circuit breaker is characterized in that: The outer diameter of the latch limiting pin wheel (13) is 2 / 3 of the outer diameter of the limiting hole (10).
6. The main shaft of the indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The main shaft body (1) is also provided with a buffer crank arm (16), and the buffer crank arm (16) is provided with a buffer roller (17).
7. The main shaft of the indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: The main shaft body (1) is also provided with an auxiliary crank arm (18).
8. The main shaft of the indoor high-voltage vacuum circuit breaker according to claim 1, characterized in that: Main shaft sleeves (19) are provided at both ends of the main shaft body (1).